title: Ultrastructure of the skeletal muscle microcirculation. I. The area of the precapillary sphincters.
mesh_terms: D000818:Animals; D002196:Capillaries / Q000648:ultrastructure; D005260:Female; D008297:Male; D008833:Microcirculation / Q000648:ultrastructure*; D009132:Muscles / Q000098:blood supply* / Q000502:physiology; D051381:Rats