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If I wanted to express the following in a general way (like an introduction to an explanation), which expression would be best? Are there any expressions that are obviously wrong? I want to mean that “this protein works in the nucleus of each cell,” but a cell has one nucleus, and there are a lot of cells in the body, so I don't know which expression to use.
(1) This protein works in the nucleus of a cell.
(2) This protein works in the nucleus of cells.
(3) This protein works in the nucleuses of cells.
(4) This protein works in nucleuses of cells.
The plural of nucleus is irregular (from Latin) - nuclei.
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LittleshiroI want to mean that “this protein works in the nucleus of each cell,”
"This protein works in the nucleus of the cell." "The cell" is the general case.