The opening in a membrane that allows components of a fluids with the same or smaller size to pass through, but not larger components of the fluid.
A small open space within sediment or rock.
The opening to a pilosebaceous unit.
The surface opening of the duct of a sweat gland or of a hair follicle.
An opening or void within a rock or mass of rock, usually small and filled with fluid (water oil, gas, or all three). See porosity. Compare vug.
More or less circular to slightly oval thinnings or openings in the exine of pollen grains. Pores may occur alone or in assocation with colpi.
Openings or channels in the theca of dinoflagellates that can be involved in extrusion of trichocysts or mucocysts and other active processes. Pore number and location are variable within a species, but in many groups, the pattern is a reliable, but variable character for identification of species (Steidinger & Tangen 1996).
an opening or channel way in rock or soil
A minute opening that is a moisture conducting cell.
any small opening in the skin or outer surface of an animal
a channel through which substances can diffuse from one side of the membrane to the other
a small, open space in a rock
a small sunspot that doesn't have a penumbra
part of ion channel which forms path ions use to move from one side of membrane to other. Often lined with some hydrophilic amino acids. Sometimes filled with water. Pore lengths have been inferred for some ion channels by blocking the pore during conduction experiments using blocking agents with long spacer arms. CFTR's pore is estimated to be around 5.8A at its narrowest point. Narrow pores will necessitate removal of some or all of an ions hydration shell before allowing passage.
An opening in a membrane or medium that allows water to pass through. charge, for instance water.
a minute opening in the skin for the passage of fluid.
membrane protein (usually an oligomeric structure) permitting nonspecific passage of solutes of different size ranges.
a pore is an opening into a sebaceous gland that secretes oil to lubricate and protect the surface of the skin.
An opening, usually microscopic, found on all living things.
an opening on the fertile surface of bolete and polypore fungi, through which basidiospores are disseminated.
A small cavity in the skin.
An opening in a membrane or filter matrix.
An opening, very small and almost circular.
an opening or space within a rock or mass of rocks, usually small and often filled with some fluid (water, oil, gas, or all three). Compare vug.
A tiny opening as in the wood, leaf, etc.
Small opening on the surface of the skin, usually reserved for the openings of sweat glands.
The open end of a tube in which certain spores of higher fungi are produced.
an opening on the skin that contains a hair follicle.
Any opening into or through a tissue or body structure.
A term which refers to small passageways or tunnels that criss-cross or "honeycomb" a particle. The term is typically used in reference to the small particles which make up the stationary phase of a column. Additionally, the term may also refer to the passageways in a frit or filtering surface.
A tiny microscopic opening, in skin, plant leaves, etc.
(n) A tiny opening in the surface of a membrane, through which small particles can pass
Small opening of the sweat glands of the skin.
in this case refers to the opening in the primary septum of members of Ascomycota and Basidiomycota. May be a simple hole, a series of fine pores or more complex (see dolipore septum).
