A large structure called the mitotic spindle also forms from long proteins called microtubules on each side, or pole, of the cell. During prometaphase, the nuclear envelope that encloses the ...

Because the integrity of a bacterial cells envelope or enclosure is key to its survival, the finding could advance the search ...

The envelope contains viral proteins embedded in it. Viral proteins with sugars attached to them are called glycoproteins. Glycoproteins typically bind to receptors on the membrane of a host cell.