317 results on '"Acker, Helmut"'
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152. Intercellular Communication in Spheroids
153. Regulatory Mechanisms in Spheroidal Aggregates of Normal and Cancerous Cells
154. Oxygen Supply to Spheroids in Spinner and Liquid-Overlay Culture
155. Liquid-Overlay Culture of Cellular Spheroids
156. Modeling and Simulation of Growing Spheroids
157. Oxygen and Glycolysis in the Retina of the Compound Eye of a Crab
158. Possible Meaning of Different Ionic Changes in the Carotid Body During Hypoxia
159. Changes of the Bioelectrical Activity and Extracellular Micromilieu in the Central Nervous System During Variations of Local Oxygen Pressure
160. Free Cytosolic Adenosine Sensitively Signals Myocardial Hypoxia
161. Possible Function of Endothelial Cells as Oxygen Sensors
162. Influence of Oxidative Stress on Metabolic and Contractile Functions of Arterial Smooth Muscle
163. PO2-Induced Changes of Membrane Potential and Tension in Vascular Smooth Musculature
164. Prostanoids and the Renal Response to Hypoxia
165. Oxygen Tension and Erythropoietin Production: The Role of the Macrophage in Regulating Erythropoiesis
166. Effect of Hypoxia on Ca2+ Influx and Catecholamine Synthesis in Chemosensitive Cells of the Carotid Body in Tissue Culture
167. Oxygen Dependent Regulation of DNA Replication of Ehrlich Ascites Cells In Vitro and In Vivo
168. Metabolic Events that May Activate Erythropoietin Production in the Hypoxic Kidney
169. Possible Mechanisms of O2 Sensing in Different Cell Types
170. Metabolic and Pathological Aspects of Hypoxia in Liver Cells
171. Oxygen Availability, Energy Metabolism, and Metabolic Rate in Invertebrates and Vertebrates
172. Effect of Oxygen Partial Pressure on Formation of the Bacterial Photosynthetic Apparatus
173. Critical PO2 of Euryoxic Animals
174. Mono-/bivalent Ion Selectivities Obtained by the Nicolsky and the Electrodiffusional Regimes
175. A Small Flexible pH-Electrode for Esophageal Monitoring
176. A Double-Channel Ion-Selective Microelectrode with the Possibility of Fluid Ejection for Localization of the Electrode Tip in the Tissue
177. A Low-Noise, Rapid Microelectrode
178. Measurements of Potassium Activities and Membrane Potentials in Tumor Cells
179. Carrier Based Ion-Selective Liquid Membrane Electrodes and their Medical Applications
180. Ionized Calcium Secretion in the Duodenal Juice of Normals, Chronic Alcoholics and Patients with Different Stages of Chronic Alcoholic Pancreatitis
181. Microelectrodes for Novel Anions and their Application to Some Neurophysiological Problems
182. Continuous Recording of K+ and Ca2+ Pancreatic Juice of Conscious Rats Provided with an Extracorporeal Pancreatic Loop
183. Intracellular pH in Purkinje Fibers. Effect of Extracellular Acidosis in a CO2/HCO3- and HEPES Containing Medium
184. Adenosine 3’–5’ Cyclic Monophosphate (cAMP)-Induced Changes in Intracellular Ionic Activities: Relation to Epithelial Ion Transport
185. Intracellular pH, Na+ and Ca2+ Activity Measurements in Mammalian Heart Muscle
186. Intracellular Electro-Chemical Studies of Single Renal Tubule Cells and Muscle Fibers
187. New Ion-Selective Membranes
188. Intracellular K+ Activity of Cardiac Purkinje Fibers During Temperature Change
189. Intracellular Ion Activity (K+ Ca2+ and Cl-) and Membrane Potential of Frog Muscle in Vitro
190. Intracellular Potassium Activity in Normal and Hypoxic Guinea Pig Papillary Muscle
191. Micro-Electrode Measurement of Skin pH in Post-Operative Intensive Care Patients
192. The Use of K+ Sensitive Electrodes to Gain an Understanding of Myocardial Ischemia
193. The Electrogenic Na-K Pump in the Sheep Cardiac Purkinje Fibre
194. Measurements of Myocardial Extracellular Na+ K+ Ca2+, and H+ Using Ion-Selective Electrodes During Ischemia
195. Role of Calcium in the Chemoreceptive Process of the Carotid Body
196. Effects of Lithium Application Upon Extracellular Potassium Structures of the Peripheral and Central Nervous System of Rats
197. Intracellular Applications of Ca2+-Selective Microelectrodes in Voltage-Clamped Shail Neurons
198. Possible Potassium Sources in Activated Loci of Mammalian Neocortex as Reflected by Electrical Currents and Potassium Changes in the Extracellular Space
199. The Kinetics of the Potassium Concentration in Brain Extracellular Fluid During Respiratory and Metabolic Disturbances
200. The Ability of the Peptide Backbone to Bind Anions as well as Cations — Implications for Peptide Carriers, Channels and Electrodes
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