we undertook studies in the isolated perfused rat lung to determine 1 ) the effects of endothelial charge neutralization with the polycation protamine sulfate on microvascular permeability , lung water , and anionic ferritin binding to the endothelium and 2 ) the role of heparan sulfate and hyaluronate , negatively charged cell surface glycosaminoglycans , on permeability .
C0019143
heparan sulfate
C0017973
glycosaminoglycans