... endothelialcells by cysteine, cystine, and N-acetylcysteine. J Clin Invest1992, 90:1649-1656.20. Shahzeidi S, Sarnstrand B, Jeffery PK, McAnulty RJ, Laurent GJ: OralN-acetylcysteine reduces bleomycin-induced ... heterodimerizes withtype I. Upon crosslinking of the receptor subunits, type IIphosphorylates serine and threonine residues located in conserved GS cytoplasmic domain of type I receptorresulting in a conformational ... administra-tion of N-acetyl-L-cysteine on sulfhydryl levels of differenttissues and bleomycin-induced lung fibrosis in hamsters. J LabClin Med 1988, 111:715-724.33. Shahzeidi S, Sarnstrand...