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microvillus noun[ C ] anatomy specializeduk /ˌmaɪ.krəʊˈvɪl.əs/ us /ˌmaɪ.kroʊˈvɪl.əs/pluralmicrovilliuk /ˌmaɪ.krəʊˈvɪl.iː/ us /ˌmaɪ.kroʊˈvɪl.iː/ a finger-like structure on the outside surface of a cell: Cytoplasmic organelles and microvilli on the epithelial cells were prominent. The surface of most oocytes, including the human, is organized into evenly spaced, short microvilli. At this stage, the plasma membrane contains very few microvilli. The microvilli are noticeably shorter, giving a smooth appearance to the oocyte surface. Studies suggested that the tips of the microvillus vesicle might be a site of sperm reception. SMART Vocabulary: related words and phrases Cells actin anaphase anti-platelet assort axoplasm histochemistry histography homologous chromosomes infiltration intercellular nerve fibre neurofibril neurofibrillary neuroglia neuroglial tetrad thrombocyte thymocyte turgor unciliated
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