Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Histochemically stained myofibers of aged (left panel) and young adult (right panel) soleus muscles. Darkest fibers are Type I, lightest fibers are Type IIA, and intermediate stained fibers are Type IIX. Note smaller fiber size and limited number of Type II fibers in the aged soleus. Original magnification of 100 x.
