Collected Papers Volume 3

Collected Papers Volume 3

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...after 24 hours' incubation. In the above mentioned preparations the bulk of all cells, with their fat storing and phagocytic capacities, their vacuolized cytoplasm have now left the implanted bone marrow particle. They advance with their fine, pointed, plasmatic pseudopodia to the outskirts of the plasma clot. Their faintly chromatic nucleus has only two nucleoli. This character is evident in the youngest cells of that kind which are close to the network of the bone marrow (figs. 36 and 37) and is also found in 'Wanderzellen' after Dantschakoff (cf. Dantschakoff, '09, page 133), plate 7, figures 2 to 5. These 'Wanderzellen' which originate from a mesenchyme or endothelial cell can, according to Dantschakoff, either be histiotypic or lymphocytic. They form in the embryonal development specific elements of the connective tissue or the hematopoetic apparatus, according to the conception of the monophyletic school. In older cultures nearly all basophil cells have nuclei of true connective tissue cell character, e.i., the chromatic granules of the nucleus are connected with fine threads. They are identical with those nuclei figured in figures 22 to 24. Not so frequent are types of nuclei figured in figures 20 and 21. The 'Wanderzellen' in the tissue culture lose, in the later days of their existence, especially in unrenewed tissue cultures, their fine cytoplasmatic processes but are--by the structure of their nuclei and their cytoplasm--connective tissue cells of a more mesenchymelike character. They are transformed to cells of the cell culture type. That these cells are descendents of the implanted cells, which were lying close to the bone marrow, is further proved by the following experiment. After all loose cells in the meshes of the bone more

Product details

  • Paperback | 124 pages
  • 189 x 246 x 7mm | 236g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236555244
  • 9781236555243