Takiuchi I, Sei Y, Takagi H, Sagawa Y
Experientia. 1984 Aug 15;40(8):846-7. doi: 10.1007/BF01951987.
A low-molecular-weight proteinase inhibitor was isolated from human plasma on the basis of its papain-inhibiting capacity. The isolated fraction demonstrated inhibitory activity against papain and trypsin activity and the molecular weight was estimated to be approximately 3200 by gel-filtration.