Nucleus
A nucleus (plural nuclei) was a component of a biological .

The nucleus of the space amoeba contained more than forty chromosomes. While attempting to free the  from the creature's clutches in 2268, a probe filled with antimatter was used to destroy the organelle in question. ()

In 2366, the 's sickbay supplied nanites – tiny machines built from the atom up – which were designed for exposure only to the inside of nuclei during cellular surgeries. ()

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Anatomy