What controls the cell cycle? What happens if a cell doesn’t pass a checkpoint?

• What controls the cell cycle?

• What happens if a cell doesn’t pass a checkpoint?

Cell growth• Growth factors– PDGF=Platelet-derived growth factor

Preventative Measures

• Separation is very careful

• Density-dependent inhibition

• Anchorage dependence

• Apoptosis

Cancer

• No growth factor needed

• Can be immortal if nutrients available

ABCDE of Skin Cancer

Signs your mole should be checked by a doctor

A – asymmetrical

B – border

C – color

D – diameter • If larger than a pencil eraser

E – elevation