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White pulp is a histological designation for regions of the spleen (named because it appears whiter than the surrounding red pulp on cross section), that encompasses approximately 25% of splenic tissue. White pulp consists entirely of lymphoid tissue.
At left is a micrograph of spleen with hyaline deposition (pink material at top of image) in association with inflammation (hyaloserositis), using H&E stain. At right is a micrograph of a kidney with arterial hyaline (hyaline arteriolosclerosis), using PAS stain.
Liu's stain is composed of two dyes, Liu A and Liu B. Liu A is the anionic dye, contains eosin Y to stain cytoplasm as well as hemoglobin into red. Liu B, on the other hand, is the cationic dye, contains azur I and methylene azure, to stain nucleus and basophilic granules into blue. To apply the stain on a fixed smear, first add Liu A for some ...
Mouse skin stained with Masson's trichrome stain. Masson's trichrome is a three-colour staining procedure used in histology . The recipes emerged from Claude L. Pierre Masson 's (1880–1959) original formulation have different specific applications, but all are suited for distinguishing cells from surrounding connective tissue .
The red pulp of the spleen is composed of connective tissue known also as the cords of Billroth and many splenic sinusoids that are engorged with blood, giving it a red color. [ 1 ] [ 2 ] Its primary function is to filter the blood of antigens , microorganisms, and defective or worn-out red blood cells.
Typically the density of the spleen and liver are roughly equivalent. In steatosis, there is a difference between the density and brightness of the two organs, with the liver appearing darker. [12] On ultrasound, fat is more echogenic (capable of reflecting sound waves). The combination of liver steatosis being dark on CT and bright on ...
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CCL19 is expressed abundantly in thymus and lymph nodes, with moderate levels in trachea and colon and low levels in stomach, small intestine, lung, kidney and spleen. [7] The gene for CCL19 is located on human chromosome 9. [8] This chemokine elicits its effects on its target cells by binding to the chemokine receptor chemokine receptor CCR7. [7]