Concept
Version 9
Created by Boundless
The Endoplasmic Reticulum

Rough Endoplasmic Reticulum
This transmission electron micrograph shows the rough endoplasmic reticulum and other organelles in a pancreatic cell.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, The Endomembrane System and Proteins. October 16, 2013."
http://cnx.org/content/m44435/latest/Figure_04_04_02_new.jpg
OpenStax CNX
CC BY 3.0.