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glossary
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| KARYORELICT
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A type of ciliate in which the macronuclei are unable to divide (e.g. Loxodes). [Link to this definition]
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| Keel
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Any ridge or flange-like extracellular thickening resembling the longitudinal plate or timber (keel) on the bottom of the hull of a ship. In foraminifera, some species are reinforced by a thickened ridge along one edge of the shell; in some pennate diatoms, it occurs on the valves ; in euglenoid flagellates, the term “keel” is used to describe prominent pellicular ridges. [Link to this definition]
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| KICK
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A type of movement exhibited by cells which sit in one position but may jerk or flick part of the cell body (e.g. Bodo saltans). [Link to this definition]
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| KINETY
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Kineties are the rows of cilia found on the bodies of ciliated protozoa - the kineties typically extend from the front of the cell to the rear. [Link to this definition]
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| KOEHLER
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A microscopist whose name is associated with a type of illumination which guarantees high resolution (but low contrast); it involves centring all optical components on the optical axis of the microscope (the axis of the objective), positioning the condenser to focus the light onto the specimen and adjusting the condenser iris so that excessive light does not enter the objective lens. [Link to this definition]
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