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Any of a group of protein filaments that are a component of the cytoskeleton in animal cells, are composed of a variety of proteins such as lamins and keratins, and provide structural support for the cytoplasm and nucleus. Intermediate filaments are intermediate in diameter between microfilaments and microtubules, the other components of the cytoskeleton.
intermediate filamentAbbreviation: IF
Slender proteins found in all eukaryotic cells, measuring about 8 to 12 nm in diameter. Intermediate filaments are composed of proteins including desmin, keratins, lamins, and vimentin and together with microtubules and microfilaments form the cytoskeleton. Some malignant cells can be identified by the specific proteins in their intermediate filaments.
See also: filament
a delicate fiber or thread.
structures of the beard of the male turkey are neither hairs nor feathers but have some of the characteristics of both.
in an x-ray machine this controls the filament current in the x-ray tube. The size of the current and its duration are controlled in this way.
in an x-ray machine the strength of the current to the filament is varied by the use of a filament or stepdown transformer.
filament focal spot size
the focal spot of the x-ray beam should be as small as possible to give maximum sharpness and clarity. Its size is determined by the size of the filament opposite that generates the beam, the anode angle and other factors.
non-contractile elements in the supportive structure of cytoplasm.