the biosynthesis and processing of the polypeptides a ( mr = 450 x 10 ( 3 ) ) , b1 ( mr = 240 x 10 ( 3 ) ) , b2 ( mr = 230 x 10 ( 3 ) ) and c ( mr = 150 x 10 ( 3 ) ) of the extracellular matrix protein , laminin , were studied in murine parietal endoderm cells labelled with [ 35s ] methionine .
C0079323
extracellular matrix protein
C0022984
laminin