the a1 antiserum , which was characterized in most detail , immunoprecipitated native as well as chondroitinase abc-digested or chondroitinase abc/keratanase-digested cartilage proteoglycan synthesized by cultured chick chondroblasts , but failed to immunoprecipitate the major proteoglycan synthesized by chick skin fibroblasts .
C0007301
cartilage
C0225368
chondroblasts