In situ hybridization with 35S-labeled type X collagen (A–D) or type II collagen (E–H) cRNAs of serial sections of decalcified sternum from newborn wild-type mouse (A, B, E, F) and homozygous Tg-A (C, D, G, H) littermate. The sections were counter-stained with hematoxylin and eosin; bright field (A, C, E, G) and dark field views (B, D, F, H) are shown.