Bestimmung der Strahlenwirkung auf die Thymidinkinaseaktivität innerhalb eines Zellzyklus synchroner Chlorella / Determination of Irradiation Effects on the Thymidine Kinase Activities Within a Cell-Cycle of Synchronously Growing Chlorella

Abstract

Ingestigations on the thymidine kinase activities within a cell-cycle of synchronously growing Chlorella cells showed a marked increase of the enzyme-activity towards the end of the DNA-reduplication. Immediately after γ-irradiation with doses of 15 krad and 35 krad, no significant changes in activity could be found; three hours after irradiation a remarkable decrease of the enzyme-activity was observed.