Intracellular
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In cell biology, molecular biology and related fields, the word intracellular means "inside the cell".[1]
It is used in contrast to extracellular (outside the cell). The cell membrane (and, in many organisms, the cell wall) is the barrier between the two, and chemical composition of intra- and extracellular milieu (Milieu intérieur) can be radically different. In most organisms, for example, a Na+/K+ ATPase maintains a high potassium level inside cells while keeping sodium low, leading to chemical excitability.[2][3] This terms also means existing within the cells.
See also
References
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<references />, or <references group="..." />External links
- Intracellular at the US National Library of Medicine Medical Subject Headings (MeSH)
