when the mouse glomerular basement membrane and rat reichert 's membrane were exposed to antibodies directed to the core protein of heparan sulfate proteoglycan , 95 % or more of the gold particles were over double tracks , whereas after exposure of reichert 's membrane to antisera against laminin , collagen iv , or entactin , labeling of the double tracks remained at the random level .
C0003241
antibodies
C0020960
antisera