the ratio of the amounts of two kinins thus formed from human plasma protein cohn 's fraction iv-4 were [ hyp3 ] -bk 25 +/- 4 % and bk 75 +/- 4 % , similarly to that of [ hyp3 ] -lys-bk and lys-bk , formed by kallikrein , but it varied by persons .
C0022714
kinins
C0006100
bk