MICRONUCLEUS
\mˈa͡ɪkɹə͡ʊnjˌuːklɪəs], \mˈaɪkɹəʊnjˌuːklɪəs], \m_ˈaɪ_k_ɹ_əʊ_n_j_ˌuː_k_l_ɪ__ə_s]\
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Nuclei, separate from and additional to the main nucleus of a cell, produced during the telophase of mitosis or meiosis by lagging chromosomes or chromosome fragments derived from spontaneous or experimentally induced chromosomal structural changes. This concept also includes the smaller, reproductive nuclei found in multinucleate protozoans.
By DataStellar Co., Ltd
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1. A small nucleus in a large cell. 2. Specifically, the smaller of the two nuclei in infusoria, dividing mitotically, containing the specific inheritable germ substance; germ nucleus, gonad nucleus, caryogonad. See macronucleus.
By Stedman, Thomas Lathrop
By Henderson, I. F.; Henderson, W. D.
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[Greek] The smaller, reproductive nucleus of many protozoa, in close proximity to meganucleus; gononucleus.
By J.H. Kenneth
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A small nucleus; particularly, in the CIliata, a small nucleus subserving reproduction.
By Alexander Duane
Word of the day
Acquired Meningomyeloceles
- Congenital, or rarely acquired, herniation meningeal spinal cord tissue through a bony defect vertebral column. majority these defects occur lumbosacral region. features include PARAPLEGIA, loss of sensation in the lower body, and incontinence. This condition may be associated with ARNOLD-CHIARI MALFORMATION HYDROCEPHALUS. (From Joynt, Clinical Neurology, 1992, Ch55, pp35-6)