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nuclear organizing region
(english) Chromosome region active in nucleolus formation and contains multiple copies of genes for ribosomal RNA synthesis. (See also: chromosome, mitosis, centromere)
régions porteuses des organisateurs nucléolaires
(french) Segment sur le chromosome qui est presque toujours peu contracté pendant la mitose, semblable en apparence au centromère pourtant habituellement plus étendu. Il est latéralement attaché à un nucléole. (See also: chromosome, mitosis, centromere)
região nuclear
(portuguese) Segmento do cromossoma que está quase sempre enrolado durante a mitose, parecendo o centrómero mas mais distendido, aderindo lateralmente ao nucléolo. (See also: chromosome, mitosis, centromere)

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