Striated myofibrils in anti-myosin stained, isolated chicken gizzard smooth muscle cells
- PMID: 83318
- DOI: 10.1007/BF00495721
Striated myofibrils in anti-myosin stained, isolated chicken gizzard smooth muscle cells
Abstract
Highly purified chicken gizzard myosin was used to induce antibody production in rabbits. The IgG fraction was separated from the antisera and coupled to fluorescein isothiocyanate (FITC). Specific antibody (AGM) was isolated from the IgG fraction by affinity purification. Comparisons of the specificity of IgG and AGM for chicken smooth muscle myosin revealed a much greater specificity by AGM. Staining with IgG led to an apparent cross-reactivity with guinea pig smooth muscles which was not seen with AGM staining. Therefore, staining of cells for localization of myosin was performed with AGM. Isolated cells were obtained from chicken gizzards either by collagenase digestion or by agitation of glycerinated pieces. Stained cells and cell fragments revealed the presence of myofibrils as structural units with diameters of about 1.0 micrometer. Stained myofibrils occasionally displayed regular banding patterns with a repeating period of about 1.5 +/- 0.2 micrometer. The presence of banded myofibrils in non-cultured cells shows that the organization of the contractile material is similar to that previously reported for cultured cells by Gröschel-Stewart.
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