scholarly journals AN ELECTRON MICROSCOPE STUDY OF MOUSE MAST CELLS ARISING IN VIVO AND IN VITRO

1971 ◽  
Vol 48 (3) ◽  
pp. 676-683 ◽  
Author(s):  
John W. Combs
Keyword(s):  
Electron Microscope ◽  
Mast Cells ◽  
Microscope Study ◽  
Electron Microscope Study

scholarly journals THE FORMATION OF COLLAGEN FIBERS BY THE ACTION OF HEPARIN ON SOLUBLE COLLAGEN: AN ELECTRON MICROSCOPE STUDY

1952 ◽  
Vol 96 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Thomas G. Morrione
Keyword(s):  
Electron Microscope ◽  
Mast Cells ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Collagen Fiber ◽  
Collagen Fibers ◽  
Fiber Formation ◽  
Soluble Collagen

Collagen fibers have been formed in vitro by the action of heparm on solutions of collagen. Heparin was found to be effective in inducing collagen fiber formation when present in concentrations as low as 1–80,000. It is postulated that mast cells, by virtue of the heparin which they produce, may play a role in the formation of collagen.

An Electron-Microscope Study of the In Vitro Transformation of Human Leucocytes

1967 ◽  
Vol 2 (3) ◽  
pp. 371-376
Author(s):  
J. A. CHAPMAN ◽  
J. GOUGH ◽  
M. W. ELVES
Keyword(s):  
Electron Microscope ◽  
Peripheral Blood ◽  
Microscope Study ◽  
Morphological Study ◽  
Electron Microscope Study ◽  
Cultured Cells ◽  
Human Peripheral Blood ◽  
In Vitro Transformation

Macrophages which develop in cultures of human peripheral blood have the typical ultrastructural features of macrophages occurring in other situations, in vivo and in vitro. The cultured cells usually have irregular nuclei and the cytoplasm possesses numerous digestion vacuoles containing debris; the cell outline is irregular with many filopodia. Other cells were laden with membrane-bounded granular bodies containing periodic-structured material of regular outline. Although it is concluded that no evidence about cell ancestry can be adduced from this morphological study, it seems likely from other work that many of these macrophages arise from lymphocytes.

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