Nakajima T, Yasuhara T, Erspamer G F, Visser J
Experientia. 1979 Sep 15;35(9):1133. doi: 10.1007/BF01963241.
Methanol extracts of the skin of the South African amphibians belonging to the genus Heleophryne (H. purcelli purcelli, H. purcelli depressa, H. purcelli orientalis, H. natalensis) contain large amounts (20--500 microgram/g fresh tissue) of Hyp3-bradykinin.
属于南非穴蛙属(普氏穴蛙指名亚种、普氏穴蛙低地亚种、普氏穴蛙东方亚种、纳塔尔穴蛙)的两栖动物皮肤的甲醇提取物含有大量(20 - 500微克/克新鲜组织)的Hyp3 - 缓激肽。