Search

An aqueous ethanol extract of Eupatorium altissimum L. (Compositae) showed confirmed activity in the P-388 lymphocytic leukemia assay in mice, and the chloroform solubles showed both cytotoxic activity in the 9KB carcinoma of the nasopharynx cell culture assay and antitumor activity in the P-388 lymphocytic leukemia assay. Two flavones, eupatorin and 5-hydroxy-3',4',6,7-tetramethoxyflavone, were isolated and identified. Both were devoid of cytotoxic and antitumor activity.

The effect of deuteriation on the germination rate of seeds is studied as a possible screening technique prior to the cultivation of a plant in high concentrations of D2O. There appears to be a simple relationship between size of the seed and germination capacity in high deuterium concentrations. Larger seeds may be more successful in germinating because of greater hydrogen-containg food reserves.