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  • Title: Alpha-smooth muscle actin as a marker for soft tissue tumours: a comparison with desmin.
    Author: Jones H, Steart PV, Du Boulay CE, Roche WR.
    Journal: J Pathol; 1990 Sep; 162(1):29-33. PubMed ID: 2231189.
    Abstract:
    The immunoreactivity of a range of vascular and non-vascular smooth muscle tumours, rhabdomyosarcomas, and non-myoid lesions has been examined with the use of a monoclonal antibody to smooth muscle-specific actin and the muscle intermediate filament, desmin. In all cases of smooth muscle-derived tumours, the alpha-actin antibody yielded superior results. Staining of the myofibroblasts of fibromatoses was also seen. In contrast to desmin, immunoreactivity was not exhibited by rhabdomyosarcomas. We propose that this monoclonal antibody to alpha-smooth muscle actin is a useful addition to the panel of reagents used for the characterization of soft tissue proliferations and tumours. The technical aspects of the application of this monoclonal antibody to immunohistochemistry are discussed.
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