12. Each of the following would inhibit cell progression through the cell cycle except
(A) DNA damage during replication.
(B) Kinase phosphorylation of mitotic Cdk.
(C) APC activity during M phase.
(D) Unphosphorylated Rb activity during G1.

(E) TGFẞ signaling.

1. 題目解析這道題目考察的是細胞週期...