Electron Microscope Observations on Intranuclear Paracrystals in Some Pteridophyta
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چکیده
منابع مشابه
Electron Microscope Observations on Intracellular
Relatively few malignant neoplasms have been described in amphibia. The one that has been studied most extensively is the Luck6 renal adenocarcinoma of the frog, Rana pipiens. This malignant tumor occurs in from two to four per cent of frogs of this species, collected in the Lake Champlain region of northern Vermont and adjoining areas of Quebec. In a series of papers Luck6 described its histop...
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To explore the problem of artefacts which may be produced during usual fixation, dehydration, and embedding, the authors have examined pancreas, liver, and bone marrow frozen at about -180 degrees C., dried, at -55 to -60 degrees C., embedded in methacrylate, sectioned, and floated on a formol-alcohol mixture. By these treatments the labile structure of living cells can be fixed promptly and em...
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It is generally accepted that the tingible bodies (Körper) of Flemming (7) found in lymphatic tissue germinal centers represent phagocytized nuclear debris of small lymphocytes (1, 2, 6, 7, 11, and others) or both lymphocyte and erythrocyte debris (15) . Several ideas about the significance of tingible bodies assume that they are small lymphocytes . The "graveyard theory" emphasizes the phagocy...
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ژورنال
عنوان ژورنال: Caryologia
سال: 1970
ISSN: 0008-7114,2165-5391
DOI: 10.1080/00087114.1970.10796405