envelope /en·ve·lope/ (en´vĕ-lōp)
1. an encompassing structure or membrane.
2. in virology the peplos, a coat surrounding the capsid and usually furnished at least partially by the host cell.
3. in bacteriology, the cell wall and the plasma membrane considered together.
nuclear envelope the condensed double layer of lipids and proteins enclosing the cell nucleus and separating it from the cytoplasm; its two concentric membranes, inner and outer, are separated by a perinuclear space.
en·ve·lope ( n v -l p ,  n-)n. An enclosing structure or cover, such as a membrane or the outer coat of a virus. |
envelope
an encompassing structure or membrane. In virology, a bilayer lipoprotein membrane with glycoprotein spikes surrounding the nucleocapsid and usually furnished, at least partially, by the host cell. In bacteriology, the cell wall and the plasma membrane considered together.
nuclear envelope
the condensed double layer of lipids and proteins enclosing the cell nucleus and separating it from the cytoplasm; its two concentric membranes, inner and outer, are separated by a perinuclear space.
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