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THE ULTRASTRUCTURE AND PERMEABILITY FOR COLLOIDAL CARBON OF INTESTINAL SUBMUCOSAL ARTERIOLES IN RATS
Author(s) -
Thorball Niels,
Olsen Finn
Publication year - 1974
Publication title -
acta pathologica microbiologica scandinavica section a pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.909
H-Index - 88
eISSN - 1600-0463
pISSN - 0365-4184
DOI - 10.1111/j.1699-0463.1974.tb03587.x
Subject(s) - internal elastic lamina , ultrastructure , biophysics , permeability (electromagnetism) , chemistry , colloid , anatomy , endothelium , pathology , biology , smooth muscle , membrane , biochemistry , medicine , endocrinology
The fine structure and the permeability to colloidal carbon of the intestinal submucosal arterioles measuring 60–100 microns in diameter were studied in the rat. With the methods used for fixation there were no signs of contraction. The fine structure was qualitatively similar to the arteriolar fine structure previously described in other organs and other animals. Special attention was drawn to the finding of endothelial protrusions through the internal elastic lamina, in some cases forming myoendothelial junctions. In several cases, interendothelial junctions were localized corresponding to these endothelial protrusions. The arteriolar wall was not permeable to colloidal carbon either as an active transfer or as a passive movement through the endothelium.