Abnormal cartilage from the mandibular condyle of stumpy (stm) mutant mice.

The mammalian mandibular condyle is composed of secondary cartilage and may thus be susceptible to genes causing achondroplasia and which result in abnormal++ primary cartilage formation. This paper describes the secondary cartilage in the mandible of the stumpy achondroplastic mutation in the mouse: both primary and secondary cartilage are affected by the gene.