Immunostaining depicts collagen-2 (cyan) and nucleus (magenta) at the articulation in the little skate embryo's pelvic joint. Synovial joints are a key feature of most vertebrate skeletons ...

This blue skate’s skeleton is made up of the same stuff as your nose and ears – cartilage. However, parts of a skate’s skeleton, such as the skull and spine, are strengthened by minerals, resulting in ...