By R. Steiner (auth.), Dr. Rudolf Steiner, Dr. Paul B. Weisz, Dr. Robert Langer (eds.)
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Extra info for Angiogenesis: Key Principles — Science — Technology — Medicine
Bar = 2 /lm . b Mercox cast of subpleural alveolar capillaries. They are of the coarse network type. Signs for intussusceptive growth are prominent (arrows). Bar = 20 /lm. 36 Figure 3. a Type I transcapillary pillar. l jlm. Note pericytic cell process (pc) roofing over the endothelial fold. ca = capillary lumen; en = endothelium. Bar = I jlm. b Type II pillar. 5 jlm in width. The core of the pillar is formed by a myofibroblast (my) with intracytoplasmic actin filaments (af). Note the lateral interendothelial junctions, which circle the pillar (arrows).
89. References I Burger PC, Chandler DB, Drysdale DB, Tano Y, Crapo JD, Freeman BA, Klintworth GK: Scanning electron microscopy of vascular casts in experimental ocular vasoproliferation. Scan Electron Microsc 1984; 4: 1893-1898. 2 Folkman J: Angiogenesis: Initiation and control. Ann NY Acad Sci 1982; 401: 212-227. 3 Folkman J, Klagsbrun, M: Angiogenic factors. Science 1987; 235: 442- 447. 4 Caduff JH, Fischer LC, Burri PH: Scanning Electron Microscope study of the developing microvasculature in the postnatal rat lung.
Haudenschild, we therefore started to investigate the capillaries of the chorio-allantoic membrane (CAM) of the chicken. Using the shellfree culture technique of chicken embryos in a petri dish , we performed live video microscopy of the CAM at various ages. Figure 4 illustrates that, indeed, extremely slender tissue pillars are also 38 Figure 4. Top view of chorio-allantoic capillary network (screen photograph of frozen video image). Note intercapillary meshes of varying sizes and tiny transcapillary tissue pillars (arrow) with erythrocyte stuck to it.
Angiogenesis: Key Principles — Science — Technology — Medicine by R. Steiner (auth.), Dr. Rudolf Steiner, Dr. Paul B. Weisz, Dr. Robert Langer (eds.)