Objective To observe the changes of the content ofi,CaM ,cAMP and activity of Ca 2+ /CaM-PK II after hypoxia in-jury.

• 目的观察缺氧后大鼠肾上腺嗜铬细胞瘤(PC12)细胞内游离钙的浓度(??a2+??)、环磷酸腺苷(cAMP)、钙调蛋白(CaM)和钙调蛋白激酶II(Ca2+/CaM-PKII)的变化。