A HISTOCHEMICAL STUDY ON THE DIFFERENTIATIONS OF ANTERIOR HORN CELL OF THE SPINAL CORD AND HINDLIMB MUSCLE FIBRE IN THE RAT

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  • ISHIHARA AKIHIKO
    <I>Doctoral Program in Health and Sports Sciences, University of Tsukuba</I>
  • SHIDE NORIYUKI
    <I>Master's Program in Health and Physical Education, University of Tsukuba</I>
  • KATSUTA SHIGERU
    <I>Institute of Health and Sports Sciences, University of Tsukuba</I>
  • FUJITA TATSUMORI
    <I>Institute of Health and Sports Sciences, University of Tsukuba</I>

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  • ラットの脊髄前角細胞と下肢骨格筋線維の分化に関する組織化学的研究
  • ラット ノ セキズイ ゼンカク サイボウ ト カシ コッカク キンセンイ ノ

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Wistar strain male albino rats were sacrificed at 1, 3, 5, 7, 9, 11, 13, 15, 17, 19 and 21 days of age, and the histochemical properties of nerve cell and muscle fibre were examined.<BR>We obtained the following differentiation process in the muscle with postnatal growth;<BR>phase I (newborn-7 days) undifferentiated fibre<BR>phase II (7-15 days) FT fibre ST fibre<BR>phase III (after 15 days) FG fibre FOG fibre SO fibre<BR>On the other hand, histochemical differentiation of nerve cell was recognized earlier than that of muscle fibre, and there was no redistribution of soma type with growth.<BR>Therefore, it may be said bhat histochemical differentiation process in the muscle is largely effected by the neuronal influences exerted from the lower motoneurons.

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