MYOD1 and Cachexia: Compared to NI-control animals, in muscles of the two unloaded groups of animals and in the two LC-cachexia mice, myoblast (Pax-7+ and MyoD+) counts did not significantly differ, whereas the numbers of myocytes (MyoD+ and myogenin+) significantly decreased (Figure 8A–D and Figure 9A,B).