furthermore , the abrin a-chain immunotoxin uptake by non-parenchymal cells in vitro was unaffected by mannose and the immunotoxin bound less readily to liver cells than did the ricin a-chain conjugate , consistent with a proposal that its accumulation by hepatic cells is brought about by endocytosis following non-specific binding or by fluid phase pinocytosis .
C0007634
the
C0014139
endocytosis