to distinguish between two possibilities , the presence of a nonpermissive microenvironment in the permanent cartilage or the intrinsic inability of caudal chondrocytes to become hypertrophic , type x-producing cells , we have isolated chondrocytes from the caudal third of stage 44 chick embryo sterna and grown them in suspension on agarose-coated dishes .
C0007301
cartilage
C0225369
chondrocytes