orthokeratinized, (ôr´thōker´
tinī´zd),
tinī´zd),adj of a specific type of epithelium; its four layers include a keratin component whose cells are nuclei-free. Most oral mucosa consists of parakeratinized epithelium, which contains nucleated keratinocytes.
Orthomyxoviridae
n.pl one of the major RNA virus families, to which the influenza virus belongs. Viruses in this family have a single-stranded, eight-segmented, linear molecular structure with helical symmetry.
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