In vertebrates, the skeleton of different regions of the body arises from different precursor cells. Researchers have now discovered that these skeletal cells do not just differ in their developmental ...

has focused on skeletal muscle, a key organ that accounts for more than 50% of body weight. Muscle fibers are divided into three types: slow twitch (type I) or red fibers due to the large number ...

In vertebrates, the skeleton of different regions of the body arises from different precursor ... embryo's back and form—besides bones—also muscles and parts of the skin.