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2. Permeabilitätstheorien

Author

Wartiovaara, Veijo, Collander, Runar, Weber, F., editor, Alfert, M., editor, Bauer, H., editor, Harding, C. V., editor, Arisz, W. H., editor, Brachet, J., editor, Callan, H. G., editor, Collander, R., editor, Dan, K., editor, Fauré-Fremiet, E., editor, Frey-Wyssling, A., editor, Geitler, L., editor, Höfler, K., editor, Jacobs, M. H., editor, Kamiya, N., editor, Mazia, D., editor, Menke, W., editor, Monroy, A., editor, Pischinger, A., editor, Runnström, J., editor, Schmidt, W. J., editor, Strugger, S., editor, Wartiovaara, Veijo, and Collander, Runar

Published
1960
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3. Narkose und Narkotica : Unter besonderer Berücksichtigung ihrer Einwirkung auf den aktiven Stofftransport und die Protoplasmapermeabilität

Author

Paech, K., Wartiovaara, Veijo, Collander, Runar, Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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4. Methoden zur Messung des Stoffaustausches

Author

Collander, Runar, Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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5. Der Ort des Penetrationswiderstandes

Author

Collander, Runar, Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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27. The Permeation of Polypropylene Glycols.

Author

Collander, Runar

Subjects
ETHYLENE glycol, LIPIDS, PHYSICAL & theoretical chemistry, POLYPROPYLENE, PLANT roots, POLYMERS
Abstract

Within the polymer series of the polypropylene glycols the relative lipoid solubility increases with increasing molecular size. At the same time the permeation power, as measured with internodal cells of Nitella and root cells of the red beet, slightly decreases. The permeation power is thus more influenced by an increase of the molecular weight by a factor of 7.6 (from 134 to about 1025) than by the simultaneous increase of the relative olive oil solubility by a factor of 100. This result is something of a warning against neglecting the influence of molecular size on permeation power. [ABSTRACT FROM AUTHOR]

Published
1960
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28. Die Permeabilität der Hefezellen für Säuren.

Author

Oura, Erkki, Suomalainen, Heikki, and Collander, Runar

Subjects
ORGANIC acids, YEAST, CELLS, HYDROGEN-ion concentration, FATTY acids, ETHER (Anesthetic)
Abstract

The permeation of some organic acids into yeast cell has been studied by addition of a solution of the acid to a suspension of yeast cells in water and by the watching the ph-changes occurring in the suspension during the first minute after the addition of the acid. Assuming that the rise of the extra cellular pH-value is due to the permeation of the acid into the cells it is possible to estimate the value of the permeation constant of the acid. In this way it was found that the permeation constants of the straightchain fatty acids are approximately proportional to their relative ether solubilities, except that smaller molecules have a somewhat greater permeation power than their solubility properties alone would imply. Acids possessing branched hydrocarbon chains have smaller permeation constant than one expect on account of their ether solubility and molecular weight. In solutions of hydroxy fatty acids or dibasic acids no rise of the extracellular pH-value during the first minute after the addition of the acid could be deleted, the permeability properties of baker's yeast stages cultivated under different conditions were much during the different growth phase. The cells of brewer's yeast were found, at an average, some 2-3 time more permeable than those of the commercial baker's yeast. [ABSTRACT FROM AUTHOR]

Published
1959
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29. Das Permeationsvermögen des Pentaerythrits verglichen mit dem des Erythrits.

Author

Collander, Runar

Subjects
PENTAERYTHRITOL tetranitrate, CELLS, SOLUBILITY, SOLUTION (Chemistry), MOLECULES, PHYSICAL & theoretical chemistry
Abstract

Pentaerythritol is known to possess a slightly greater lipoid solubility than erythritol. In spite of this, epidermal cells of Rhoeo and leaf cells of Elodea were found to deplasmolyze considerably more slowly in solutions of pentaerythritol than in solutions of erythritol. (Observations on mesophyll cells of Vallisneria were somewhat more ambiguous but pointed in the same direction.) These findings seem to corroborate the view that richly branched molecules have a smaller permeation power than less bulky molecules of equal lipoid solubility and equal molecular volume. [ABSTRACT FROM AUTHOR]

Published
1959
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30. Die Permeabilität des Plasmalemmas für Säuren.

Author

Collander, Runar

Abstract

Row 3 of Table 1 gives the times required to kill the leaf protoplasts of Eiodea densa in solutions containing 0.05 M of different acids and 0.05 M of their primary sodium salts per litre. A priori there are, of course, two conceivable alternatives regarding the killing effects of the acids: (a) the plasmalemma is directly damaged by the H+-ions of the external solution, (b) the acid penetrates the undamaged plasmalemma and then exerts its toxic effects in the interior of the protoplasm. In our experiments, the first alternative was largely eliminated by avoiding too low pH values of the test solutions. On the other hand, the intracellular toxic actions may depend either (b1) on the H+-ions or (b2.3) on the acid molecules, or acid anions or both. In the experiments on which the present paper is based, however, the intracellular action of the H+-ions appears to dominate in most cases. Taking into account that all the solutions tested contained the same concentration of undissociated acid molecules, it may be inferred that the death rates observed are probably, on the whole, fairly reliable measures of the permeability of the plasma-lemma towards the acid molecules in question. The death rates observed are correlated with the relative ether solubilities and molecular sizes of the acids in much the same way as the permeation power of non-electrolytes towards Nitella protoplasts is correlated with their ether solubility and molecular size. It thus seems that the diffusion resistance offered by the plasmalemma towards acids is fairly similar to that offered by the protoplast as a whole. When nutrient solutions containing increasing concentrations of different acids were inoculated with conidia of Aspergillus niger, it was found that there exists a fairly close correlation between the killing velocities of different acids towards Elodea cells, on the one hand, and their power to prevent the germination of the conidia of Aspergillus, on the other. This suggests a certain resemblance between these two organisms regarding the permeability of their plasmalemmas. [ABSTRACT FROM AUTHOR]

Published
1957
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31. The Permeability of Nitella Cells to Non-Electrolytes.

Author

Collander, Runar

Subjects
ORGANIC compounds, OSMOSIS, POROSITY, ADSORPTION (Chemistry), SOLUTION (Chemistry), OLIVE oil
Abstract

The permeability of the internodal cells of Nitella mucronata to 70 nonclectrolytes has been determined by quantitative chemical analyses of the amounts taken up or given off by single cells at 20°C. in definite intervals under the influence of a concentration gradient of known magnitude. The permeability of the protoplast alone has also been calculated. The permeation power towards Nitella protoplasts is found to be roughly proportional to the 1.3rd power of the partition coefficient in the system ether/water or. still more closely, to about the same power of the olive oil/water partition coefficient. On the other hand, it is inversely proportional lo about the 1.5th power of the molecular weight. The permeation power of the smallest molecules is, however, greater than these statements would imply. The permeability properties of Chara and Nitellopsis are on the whole very similar to those of Nitella, except for one consistent difference: the P-values for Nitellopsis are approximately proportional to (kolive oil)1.15 those for Chara to the oil/water partition coefficient itself. These permeability differences are probably due to differences in the degree of hydrophobia of the plasma membrane lipoids. [ABSTRACT FROM AUTHOR]

Published
1954
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32. The Permeability of Nitella Cells to Rapidly Penetrating Non-Electrolytes.

Author

Collander, Runar

Subjects
PERMEABILITY, ADSORPTION (Chemistry), ELECTROLYTES, NITELLA, CHARACEAE, CHARALES
Abstract

The permeability of Nitella cells to very rapidly penetrating non-electrolytes can easily be studied semi-quantitatively by watching the changes of length which such cells undergo when treated successively with water and aqueous solutions of the substances to be studied. Table 1 contains an enumeration of the maximum contractions caused by equimolar solutions of 28 such substances. This list at the same time indicates, in a general way, the gradation of permeation power with regard to Nitella cells. It is concluded that the relations between permeation power on the one hand and lipoid solubility (represented by the ether/water partition coefficient) and molecular weight on the other, are in this case about the same as those previously found for other cells and other solutes: for medium-sized molecules the lipoid solubility is the decisive factor while the smallest molecules permeate more rapidly than would be expected in view of their solubility alone. [ABSTRACT FROM AUTHOR]

Published
1950
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33. The Permeability of Plant Protoplasts to Small Molecules.

Author

Collander, Runar

Subjects
PERMEABILITY, ADSORPTION (Chemistry), PHYSICS, SOLIDS, PROTOPLASTS, FUNGAL protoplasts, CELLS
Abstract

The very smallest molecules (e. g., those of formamide, ammonia, methylamine, water, and methanol) penetrate plant protoplasts with distinctly greater rapidity than would be expected if the permeation constants were proportional to k/M1/2 where k denotes the oil/water partition coefficient and M the molecular weight. The plasma membranes thus exert a kind of sieve-effect which manifests itself in the accelerated permeation of the very-smallest molecules. [ABSTRACT FROM AUTHOR]

Published
1949
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34. Die Permeabilität pflanzlicher Protoplasten für Harnstoff und Alkylharnstoffe: (Ein Beitrag zur Kenntnis der Molekülgrösse und der Lipoidlöslichkeit als permeationsbeeinflussende Faktoren).

Author

Collander, Runar and Wikström, Börje

Abstract

A compilation of the data, scattered in the literature, about Ibe permeability of plant protoplasts to urea and methyl-urea is given in Table 1. From this compilation, and also from the experiments presented in chapter 2, it is seen that the ratio Pmethyl-urea: Purea has in by far the most cases a value between about 2 and 6. (Cfr. also Fig. 3.) There are, however, also several cases in which urea permeates about as fast or even 2—3 times faster than methyl-urea. On the other hand, there is not a single firmly established example of protoplasts which would be more than about 6 times more permeable to methyl-urea than to urea. The first-named cases are easily understandable as a consequence of the fact that the distribution ration lipoid/water of methyl-urea is about 2—6 times greater than that of urea. The cases in which urea permeates faster than methyl-urea seem, however, to indicate that the plasma membrane sometimes exerts some kind of sieve-effect towards these molecules. Dimethyl- and ethyl-urea always, or nearly always, permeate faster than methyl-urea. [ABSTRACT FROM AUTHOR]

Published
1949
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42. Vorkommen und Arten des Aktivitätswechsels

Author

Bünning, E., Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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43. Die Koordination der Reaktionssysteme

Author

Bogen, H. J., Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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44. Der Zellkern

Author

Bahr, G. F., Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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45. Altern und Zelltod

Author

Paech, K., Eberhardt, F., Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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46. Endogene Aktivitätsrhythmen

Author

Bünning, E., Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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47. Regulierende Faktoren des Aktivitätswechsels

Author

Bünning, E., Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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48. Elektrophysiologische Phänomene

Author

Umrath, Karl, Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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49. Resistenz gegen Infektion. Immunität

Author

Kern, Heinz, Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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50. Effects of toxic compounds: stimulation, inhibition, injury, and death

Author

Currier, H. B., Ruhland, W., editor, Ashby, E., editor, Bonner, J., editor, Geiger-Huber, M., editor, James, W. O., editor, Lang, A., editor, Müller, D., editor, Stålfelt, M. G., editor, Bahr, Günther F., editor, Bogen, Hans J., editor, Brauner, Leo, editor, Bünning, Erwin, editor, Caspersson, T., editor, Collander, Runar, editor, Currier, H. B., editor, Drawert, Horst, editor, Duspiva, Franz, editor, Eberhardt, Frank, editor, Epstein, Emanuel, editor, Fischer, Hermann, editor, Helder, R. J., editor, Kern, Heinz, editor, Klein, Georg, editor, Kramer, Paul J., editor, Levitt, J., editor, Meyer, Bernard S., editor, Millerd, Adèle, editor, Paech, K., editor, Robertson, R. N., editor, Seifriz, W., editor, Simonis, Wilhelm, editor, Spanner, D. C., editor, Stadelmann, Eduard, editor, Stocker, Otto, editor, Stocking, C. Ralph, editor, Umrath, Karl, editor, Wartiovaara, Veijo, editor, and Ullrich, H., editor

Published
1956
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