Abstract
We report observations regarding the in vivo distribution of labelled kallikreins in plasma, liver and some other organs, twenty minutes following their intravenous injection in the rat. The kallikreins used were: tritiated homogeneous human plasma (HuPK) and horse urinary (HoUK) as well as highly purified iodinated rat plasma kallikrein (RPK). The main findings were: the liver cleared 15% of HuPK, 38% of RPK and 69% HoUK; with both types (plasma and tissue) of native kallikreins the liver was the main clearing organ.
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