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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>

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>

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>

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>

- 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>

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

Main Slide Polysomes RER >Nucleus - Nuclear envelope Plasma membrane