Three medulloblastomas and 1 cerebellar sarcoma were studied on their plasma membrane structures. The average number of membrane particles per mum2 plasma membrane was 710 on face A and 70 on face B ...of medulloblastoma and 1280 on face A and 160 on face B of cerebellar sarcoma. The membrane particles were often aggregated in medulloblastoma and diffusely scattered in cerebellar sarcoma. Small gap junctions were occasionally found in cerebellar sarcoma and not evident in medulloblastoma. Round membrane protrusions, about 0.5-0.6 mu in diameter and provided with several small depressions on their foot, were often observed in region of narrow perinuclear cytoplasm of cerebellar sarcoma and different in structure from cytoplasmic processes. The present series is too limited in number to allow a definite conclusion, but indicates that the plasma membrane structures are different in medulloblastoma and cerebellar sarcoma.
A technique has been devised for producing meningopneumonitis plaques in monolayers of L cells. There is a linear relationship between plaque count and virus input, and the reproducibility of the ...results suggests that this will be a useful assay method.
Structural and carbohydrate histochemicall investigations were made of the minor salivary gands of the Japanese macaque, and the following conclusions were drawn. 1. Both the minor sublingual glands ...and retromolar glands represent small glands having their own excretory ducts which are located in the indicated regions. 2. The mucous cells in the minor sublingual glands and retromolar glands predominantly surpass the serous cells in number. 3. The Japanese macaque has no anterior lingual glands. 4. The glandular cells in the minor salivary glands contain no glycogen. 5. The mucous cells contain neutral, weak and strong acid mucopolysaccharides, and reactions to the strong mucopolysaccharide are distinctly demonstrated. 6. Some mucous glands neighboring the von Ebner's glands contain no strong acid mucopolysaccharide, and nothing else except such a kind of mucous glands was found. 7. The reactions to the adove-mentioned mucosubstances in the serous cells are limited to the granules. It is presumed therefore that quantity of the same substance, especially the strong acid mucopolysaccharide in the mucous cells, is small. 8. Since the so-called serous cells contain three kinds of mucopolysaccharides, they should be termed seromucous cells. 9. von Ebner's glands also cotain three kinds of mucopolysaccharides. They are thus seromucous glands, but strongly surpass the common seromucous glands in the quantity of the same mucosubstances. 10. The mucous components in the minor salivary glands of the Japanese macaque predominantly surpass the serous ones in quantity.
A hermatypic coral, Oulastrea crispata (Lamarck) is known to have wide distribution areas to the northern limit of the distribution range in Faviidae. Little has been known for distribution patterns ...of O. crispata around the Seto Inland Sea, temperate waters of Japan. In the present study, we report the distribution record of O. crispata in the shore region of Osaki-Kamijima Islands on the mid-western area of Seto Inland Sea. Oulastrea crispata was found in sub-tidal biotopes (1-3 m depth), and each colony was relatively small, usually less than 10 cm in diameter. Because O. crispata was found at least three different shore regions of Osaki-Kamijima Islands, it is suggested that O. crispata commonly occur in the local geographic area around the island.
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