Abstract

AbstractGrowth and the expression of cartilage‐like differentiation by adult rabbit chondrocytes is stimulated greatly by the Sephadex G‐25 macromolecular fraction of chicken embryo extract (CEEM). A small amount of fetal bovine serum or the macromolecular fraction of fetal bovine serum (FBSM) is also needed for growth. Medium F12 supplemented with CEEM plus FBSM supports moderate clonal growth of the rabbit chondrocytes with excellent expression of differentiated properties. The effects of CEEM on growth and the expression of differentiation have been quantitated by measurement of radioactive sulfate incorporation and total protein synthesis.

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