myofibroblast my·o·fi·bro·blast (mī’ō-fī’brə-blāst’)
A fibroblast having some of the characteristics of smooth muscle cells, such as contractile properties.


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  • Myofibroma

    myofibroma my·o·fi·bro·ma (mī’ō-fī-brō’mə) n. A benign tumor that consists chiefly of fibrous connective tissue, with variable numbers of muscle cells forming portions of the tumor.

  • Myofibrosis

    myofibrosis my·o·fi·bro·sis (mī’ō-fī-brō’sĭs) n. Chronic myositis with diffuse hyperplasia of the interstitial connective tissue pressing upon and causing atrophy of the muscular tissue.

  • Myofibrositis

    myofibrositis my·o·fi·bro·si·tis (mī’ō-fī’brə-sī’tĭs) n. See perimysiitis.

  • Myofilament

    [mahy-uh-fil-uh-muh nt] /ˌmaɪ əˈfɪl ə mənt/ noun, Cell Biology. 1. a threadlike of actin or myosin that is a component of a myofibril. myofilament my·o·fil·a·ment (mī’ə-fĭl’ə-mənt) n. Any of the ultramicroscopic filaments, made up of actin and myosin, that are the structural units of a myofibril.

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