Pore
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2008-06-27T09:30:20Z
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{{wiktionary|pore}}
{{Distinguish|poor|poore|pour}}
'''Pore''' may refer to:
In '''animal biology and microbiology''':
* [[Sweat pore]], an anatomical structure of the skin of humans (and other mammals) used for secretion of sweat
* [[Canal pore]], an anatomical structure that is part of the lateral line sense system of some aquatic organisms
* An opening across both inner and outer bacterial membranes, a part of many [[Secretion#Secretion_in_Gram_negative_bacteria|Gram-negative bacterial secretion systems]]
* One of the openings communicating with the skin surface at the terminus of [[lactiferous duct]]s in milk-producing mammals
In '''plant biology'''
* [[Stoma]], a small opening on a plant leaf used for gas exchange
* An anatomical feature of the [[anther]] in some plant species, the opening through which pollen is released
* A characteristic surface feature of [[porate pollen]]
In '''cell & molecular biology''':
* [[Nuclear pore]], a large protein complex that penetrates the nuclear envelope in eukaryotic cells
* [[Ion channel pore]]; The ion-selective opening in the membrane of a eukaryotic cell formed by members of the [[ion channel]] family of proteins
* A water-selective opening (water channel) in the membrane of a eukaryotic cell formed by assemblies of the protein [[aquaporin]]
In the '''physical sciences''':
* One of many small openings in a solid substance of any kind that contribute to the substance's [[porosity]] (typical usage in earth sciences, materials science and construction)
* A small defect in the crystal structure that may arise during [[sintering]] to form solids from powders, including ceramics
==See also==
* [[Aperture]]
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