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用包埋后免疫电镜方法对14例人胚心肌细胞内的ANP分布进行了观察。2个月人胚心肌细胞内开始出现SG,3个月人胚心房肌细胞的SG已可见ANP免疫反应性和分泌现象。6个月人胚心室肌细胞内仍含少数SG,但ANP免疫反应性弱。A、B、D三型SG内ANP的分布与其机能状态有关。
The distribution of ANP in 14 cases of human embryonic cardiomyocytes was observed with embedded electron microscopy. SG began to appear in 2-month human embryonic cardiomyocytes and ANP immunoreactivity and secretion of SG in 3-month human embryonic atrial myocytes were observed. Six months in human embryonic ventricular myocytes still contain a small number of SG, but ANP immunoreactivity weak. The distribution of ANP in type A, B and D type SG is related to their functional status.