basal body

basal body (kinetosome) A eukaryotic cell organelle within the cell body where a flagellum arises, which is
usually composed of nine longitudinally oriented, equally spaced sets of three microtubules. They usual­ly occur in pairs and are structurally identical to a centriole.

Not to be confused with basal body temperature (BBT), which is the lowest body temperature of the day, usually the temperature upon awakening in the morning. BBT is usually charted daily and is used to determine fertility or to achieve pregnancy.

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