[名词解释] cyclin (周期蛋白)

START (起点) Cdc34 protein（Cdc34 蛋白） cyclin-dependent protein kinases, Cdks (周期蛋白依赖性蛋白激酶) premature chromosome condensation,PCC (染色体早熟凝集) conditional mutants (条件突变体) cyclin (周期蛋白)