ULTRASTRUCTURE OF MUCOCYSTS AND PELLICLE OF TETRAHYMENA PYRIFORMIS
نویسندگان
چکیده
منابع مشابه
Ultrastructure of Mucocysts and Pellicle of Tetrahymena Pyriformis
Tetrahymena pyriformis GL was fixed with glutaraldehyde and/or OsO(4) for a study of cytoplasmic ultrastructure. Many small vacuoles 0.05 to 0.5 micro in diameter were found to contain each a dense particle enveloped by a limiting membrane. This membrane is continuous with the membrane of the vacuole. The particles are irregular in shape and size, but similar to the mucocysts in the appearance ...
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Within the limits of the light microscope the sequence of events occurring during conjugation in Tetrahymena pyriformis is well known (2, 4, 5). However, certain questions regarding the finer morphological details can be resolved only with the electron microscope. One such question is concerned with the interchange of cytoplasmic particulates between mates during conjugation. Silver-line studie...
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The cellular site of synthesis of ribosomal RNA in Tetrahymena pyriformis was studied by analyzing the purified nuclear and cytoplasmic RNA from cells pulse labeled with uridine-(3)H. The results of studies using zonal centrifugation in sucrose density gradients show that the ribosomal RNA is synthesized in the nucleus as a large precursor molecule sedimenting at 35S. The 35S molecule undergoes...
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The ease with which Tetrahymena can be grown in relatively large quantity makes it an exceptionally useful source of cilia for biochemical study. Several methods of isolating the cilia have been described (3, 11). Although excellent for many purposes, these procedures all suffer from the limitation that the isolated cilia seem incapable of being reactivated by ATP. This paper describes a method...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1965
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.27.1.67