Cartilage antuumor component (CATC) was isolated from a 1 mol/L guanidine hydrochloride extract of bovine cartilage by acetone fractioned precipitation and superfiltration.

• 采用盐酸胍抽提,丙酮分级沉淀,超滤等步骤从牛软骨中提取出软骨抗肿瘤组分(Cartilage antitumor component,CATC)。