The expression of angiotensinogen (ANG) mRNA and the changes of AngII contents in hypothalamus, anterior pituitary, adrenal medulla and adrenal cortex of rats (n=35) during acute and chronic stress were investigated by in situ hybridization technique and RIA The results showed that the ANGmRNA expression was significantly increased in hypothalamus (n=5, P <0 001), anterior pituitary (n=5, P <0 05), and adrenal medulla (n=5, P <0 05), especially in hypothalamus The increased ratios of ANGmRNA s...