the sera of 24 patients presenting with good-pasture 's syndrome , and of 30 normal blood donors were tested for the presence of anti-basement membrane ( bm ) antibodies , by a radioimmunological method , using two highly purified bm antigens , i.e . the type iv ( bm ) procollagen and a non-collagenous glycoprotein ( laminin ) isolated from the bm matrix secreted by a murine tumor .
C0022984
laminin
C0004799
bm