第二节细胞的跨膜信号转导 chap 5 Membrane receptors, second messengers, and signal-transduction pathways from Berne Levy principles of Physiology (4thed)2005• chap. 5 Membrane receptors, second messengers, and signal-transduction pathways 第二节 细胞的跨膜信号转导 from Berne & Levy Principles of Physiology (4th ed) 2005