scholarly journals Electron Microscope Study of a Cell-Free Induced Leukemia of the Mouse: A Preliminary Report

1958 ◽  
Vol 4 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Étienne de Harven ◽  
Charlotte Friend
Keyword(s):  
Electron Microscope ◽  
Microscope Study ◽  
Preliminary Report ◽  
Electron Microscope Study ◽  
Leukemic Cells ◽  
Virus Like Particles ◽  
Preliminary Results ◽  
Mouse Tumors ◽  
A Cell

Preliminary results of an electron microscope study of a leukemia of the mouse transmissible by cell-free filtrates are reported. In twelve out of forty-seven specimens examined, virus-like particles were observed. So far, these particles have not been observed in control, non-leukemic animals. They are located inside the cytoplasm of leukemic cells which infiltrate the spleen or the liver. Their diameter is approximately 78 mµ. Their resemblance to other particles recently described in different mouse tumors is stressed. Their significance and, in correlation with ultrafiltration data, their possible etiological meaning are discussed.

Ultrastructure of Plant Leaf Tissue Infected with Mite-Borne Viral-Like Pathogens

1970 ◽  
Vol 28 ◽  
pp. 178-179 ◽  
Author(s):  
O. E. Bradfute ◽  
R. E. Whitmoyer ◽  
L. R. Nault
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Electron Microscope ◽  
Hordeum Vulgare ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Leaf Tissue ◽  
Leaf Ultrastructure ◽  
Double Membrane ◽  
Aceria Tulipae

A pathogen transmitted by the eriophyid mite, Aceria tulipae, infects a number of Gramineae producing symptoms similar to wheat spot mosaic virus (1). An electron microscope study of leaf ultrastructure from systemically infected Zea mays, Hordeum vulgare, and Triticum aestivum showed the presence of ovoid, double membrane bodies (0.1 - 0.2 microns) in the cytoplasm of parenchyma, phloem and epidermis cells (Fig. 1 ).

Electron microscope study of the microgranules in human vaginal epithelium

1978 ◽  
Vol 36 (2) ◽  
pp. 568-569
Author(s):  
A. Campos ◽  
J. Vilches ◽  
J. Gomez
Keyword(s):  
Electron Microscope ◽  
Microscope Study ◽  
Intercellular Space ◽  
Electron Microscope Study ◽  
Vaginal Epithelium ◽  
Vaginal Mucosa ◽  
Secretory Phase ◽  
Cervical Epithelium ◽  
Keratinized Epithelium ◽  
Fertile Women

Microgranules have been described with different names in keratinized and in nonkeratinized epithelium. In keratinized epithelium it seems clear that the microgranules are lamellated bodies bounded by a membrane which empty their contents into the intercellular space. Their existence in nonkeratinized epithelium is more debatable. Until now the so-called microgranules have been described in nonkeratinized bucal, lingual and cervical epithelium. In the present work we describe the morphology and nature of such structures in human vaginal epithelium.Biopsies from the midlevel of the vaginal mucosa were taken from voluntary fertile women. The specimens were divided into three groups with four vaginal specimens. The first group was obtained in the folicular phase; those of the second in the postovulatory phase and, finally, the last group corresponded to the secretory phase.

Structure of Fibrinogen and its Derivatives: An Electron Microscope Study

1979 ◽  
Vol 41 (04) ◽  
pp. 655-661 ◽  
Author(s):  
L Tranqui ◽  
M H Prandini ◽  
M Suscillon
Keyword(s):  
Electron Microscope ◽  
Microscope Study ◽  
Electron Microscope Study
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