TK- mouse lymphoma cells. Plymouth UK 2002. Kratom Extract Method Timpson genetic Toxicology and Environmental Mutagenesis 540:127-140. Cyclin-dependent kinases: engines clocks and microprocessors. Annu Rev Cell Dev Biol. The cell cycle: Principles of control. Oxford University Press. M populations seem to regain slowly at 72 hr onwards. The presence of subG1 cells in this experiment […]