NO ARM DAY WORKOUT is complete without a solid biceps pump. The big arm muscles are one of the most popular points of focus for mass-obsessed gym bros, and for good reason. The biceps take up a prime ...
Tissues were isolated from mice perfused with 4% paraformaldehyde, cryoprotected with 20% sucrose, and frozen in Oct compound (Sakura, Torrance, CA). Cryosections (12 μm) were stained with the ...