منابع مشابه
Intestinal Capillaries
Horseradish peroxidase (mol. diam. approximately 50 A) and ferritin (mol. diam. approximately 110 A) were used as probe molecules for the small and large pore system, respectively, in blood capillaries of the intestinal mucosa of the mouse. Peroxidase distribution was followed in time, after intravenous injection, by applying the Graham-Karnovsky histochemical procedure to aldehyde-fixed specim...
متن کاملPermeability of Intestinal Capillaries
The pathway followed by macromolecules across the wall of visceral capillaries has been studied by using a set of tracers of graded sizes, ranging in diameter from 100 A (ferritin) to 300 A (glycogen). Polysaccharide particles, i.e. dextran 75 (mol wt approximately 75,000; diam approximately 125 A), dextran 250 (mol wt 250,000; diam approximately 225 A), shellfish glycogen (diam approximately 2...
متن کاملINTESTINAL CAPILLARIES II. Structural Effects of EDTA and Histamine
Perfusion of the fenestrated capillaries of the intestinal mucosa of the rat with 0.05-0 .1 M EDTA removes the diaphragms of the endothelial cells and detaches these cells from one another and from the basement membrane . The latter, even when completely denuded, retains effectively particles of 340 A (average) diameter. Perfusion with histamine (1 μg/ml) results in partial removal of fenestral...
متن کاملPERMEABILITY OF INTESTINAL CAPILLARIES Pathway followed by Dextrans and Glycogens
The pathway followed by macromolecules across the wall of visceral capillaries has been studied by using a set of tracers of graded sizes, ranging in diameter from 100 A (ferritin) to 300 A (glycogen) . Polysaccharide particles, i .e. dextran 75 (mol wt -75,000 ; diam -125 A), dextran 250 (mol wt 250,000 ; diam -225 A), shellfish glycogen (diam -200 A) and rabbit liver glycogen (diam -300 A), a...
متن کاملAnalysis of the permeability characteristics of cat intestinal capillaries.
The permeability characteristics of cat small intestine capillaries were studied using both osmotic transient and lymph-to-plasma protein concentration ratio (L/P) techniques, A vascularly perfused segment of ileum in which superior mesenteric arterial pressure, blood flow, superior mesenteric venous pressure, and lymph flow were monitored was used for both determinations. Intestinal volume was...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1969
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.41.1.33