Mechanistic aspects of [Rh(nbd)CI][sub 2]initiated oligomerization of new acetylenic monomers

TL;DRAbstract

The follicular architecture of the thyroid gland of the rat following experimentally induced states of hypo- and hyperactivity was investigated by scanning electron microscopy and the findings correlated with both light and transmission electron-microscopic observations. By scanning electron microscopy, the microvilli on the apical surfaces of the follicular cells showed the most striking changes; following hypophysectomy, the cells were flattened and the microvilli had decreased in both size and number, whereas following propylthiouracil (PTU) administration the epithelial cells were enlarged, and marked hyperplasia and hypertrophy of the microvilli was present. Of particular interest is that the changes observed following PTU appeared to be identical in short- and long-term PTU-treated rats. Similarly, the heterogeneity of the follicular cells observed within the follicles was maintained under the various experimental conditions. Although the functional significance of these observat

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