. Electron microscopy; proceedings of the Stockholm Conference, September, 1956 . Fig. 3. Fibrillar zone of a contracted melanophore, the width being about microns. Magnification 20,000. Fig. 4. Fibrillar zone of a dispersed melanophore, the width being about micron. Magnification 17,000. Fig. 5. Longitudinally cut fibrils. Magnification x 33,000. Fig. 6. Transversely cut fibrils. Magnification < 55,000. membranes. The width of this fibrillar zone varies with the pigment dispersion. By fully dispersed melanophores the width is about n and by fully concentrated melanophores the w
. Electron microscopy; proceedings of the Stockholm Conference, September, 1956 . Fig. 3. Fibrillar zone of a contracted melanophore, the width being about microns. Magnification 20,000. Fig. 4. Fibrillar zone of a dispersed melanophore, the width being about micron. Magnification 17,000. Fig. 5. Longitudinally cut fibrils. Magnification x 33,000. Fig. 6. Transversely cut fibrils. Magnification < 55,000. membranes. The width of this fibrillar zone varies with the pigment dispersion. By fully dispersed melanophores the width is about n and by fully concentrated melanophores the width is about 3 n (figs. 3-6). The fibrils are regarded as representing contrac- tile structures, which as a basket mesh-work surround the inner sack. Thus when the fibrils contract, the
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