阻遏

Catabolite repression is considered as a main factor controlling yield of cellulases.

降解物是菌株控制其产酶量主要调节机制。

The lac operon is an inducible operon, whereas the trp operon is a repressible operon.

乳糖操纵元是可诱导操纵元；色氨酸操纵元是可操纵元。

It seems reasonable to conclude that Toosendanin is a presynaptic blocking agent.

些结果，楝素是一个选择性地作用于突触前神经肌肉传递剂。