![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Rough endoplasmic reticulum and polysomes
This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x
![Polysomes <p>This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-11-1-ping.png)
Polysomes
This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x
![RER > <p>Ribosomes are also present as a component of the rough endoplasmic reticulum (red arrows). This section shows where the RER is continuous with the nuclear envelope (yellow arrow). 15,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-11-2-ping.png)
RER >
Ribosomes are also present as a component of the rough endoplasmic reticulum (red arrows). This section shows where the RER is continuous with the nuclear envelope (yellow arrow). 15,000x
![Nucleus <p>This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-11-4-ping.png)
Nucleus
This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x
![- Nuclear envelope <p>This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-11-3-ping.png)
- Nuclear envelope
This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x
![Plasma membrane <p>This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-11-5-ping.png)
Plasma membrane
This electron micrograph shows a cell with ribosomes arranged predominately as polysomes rather than in association with RER. Proteins manufactured by polysomes are not packaged into secretory granules but are released into the cytoplasm for intracellular use. 15,000x