[Effect of colchamine on Ehrlich ascitic carcinoma cells showing synchronized cell division]

The author studied the 24-hour changes in the number of normal and colchamine mitoses in the cells of Ehrlich's ascites carcinoma in mice after the injection of colchamine argainst the background of partial synchronization of cell division, obtained as a result of preliminary injection of dibutyryl cyclic 3',5'-AMP, and also in mice after the injection of colchamine alone or dibutyryl cyclic 3',5'-AMP. As shown, synchronization of cell division in the tumour led to the 2,6-fold increase in the number of tumour cells blocked by colchamine and also to the accelerated arrest of colchamine mitoses.