摘要
At the beginning of the 1980s some scholars discovered that α<sub>1</sub>-adrenoceptors in the same kind of tissues of different species or in different tissues of the same animal showed different pharmacological characteristics. According to these phenomena they hypothesized that α<sub>1</sub>-adrenoceptor contained two subtypes. One of the authors of this note first fully ap-
基金
Project supported by the National Natural Science Foundation of China.
