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.
Transmission electron micrographs of transverse muscle fibers of Sepia officinalis and Octopus bimaculoides. A. Transverse fibers from the arm of S. officinalis. B. Transverse fibers from the tentacle of S. officinalis. C. Transverse fibers from the arm of O. bimaculoides. DB, dense body; SR, sarcoplasmic reticulum.
