Permeability of muscle capillaries to microperoxidase.
نویسندگان
چکیده
منابع مشابه
Permeability of muscle capillaries to microperoxidase
In this study we attempted to identify a morphologic counterpart of the small pore of muscle capillaries. The existence of such a pore has been postulated by physiologists to explain the permeability of muscle capillaries to small macromolecules. We injected mice intravenously with microperoxidase (MP) and fixed specimens of diaphragm at intervals of 0-250 s after the injection to localize the ...
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Whale skeletal muscle myoglobin (mol wt 17,800; molecular dimensions 25 x 34 x 42 A) was used as a probe molecule for the pore systems of muscle capillaries. Diaphragms of Wistar-Furth rats were fixed in situ at intervals up to 4 h after the intravenous injection of the tracer, and myoglobin was localized in the tissue by a peroxidase reaction. Gel filtration of plasma samples proved that myogl...
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The main objective of this study was to determine the pathways by which horseradish peroxidase (HRP) can cross the endothelium of muscle capillaries. Specimens of mouse diaphragm were fixed for cytochemical analysis at various intervals after intervenous injection of 0.5 mg HRP, at 4 min after intervenous injection of varied amounts of HRP, and at 4 min after intervenous injections in various ...
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It has been rather generally assumed, chiefly because normal urine is practically free from lipoids (9, 10, 11) that the capillaries are impermeable to plasma lipoids. However, no serious attempts seem to have been made to test this assumption, in spite of its important bearing on the question of plasma colloid osmotic pressure. In order to determine whether lipoids diffuse through the capillar...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1978
ISSN: 0021-9525,1540-8140
DOI: 10.1083/jcb.76.2.341