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A Basophil granulocyte stains dark purple upon H&E staining. Basophilic is a technical term used by pathologists. It describes the appearance of cells, tissues and cellular structures as seen through the microscope after a histological section has been stained with a basic dye. The most common such dye is haematoxylin.
Basophils are the least common type of granulocyte, representing about 0.5% to 1% of circulating white blood cells. [1] They are the largest type of granulocyte. They are responsible for inflammatory reactions during immune response, as well as in the formation of acute and chronic allergic diseases, including anaphylaxis , asthma , atopic ...
There are four types of granulocytes (full name polymorphonuclear granulocytes): [3] Basophils; Eosinophils; Neutrophils; Mast cells; Except for the mast cells, their names are derived from their staining characteristics; for example, the most abundant granulocyte is the neutrophil granulocyte, which has neutrally staining cytoplasmic granules.
An anterior pituitary basophil is a type of cell in the anterior pituitary which manufactures hormones. It is called a basophil because it is basophilic (readily takes up bases), and typically stains a relatively deep blue or purple. [1] These basophils are further classified by the hormones they produce.
Hyaline cartilage coloured with the toluidine blue, in wich you can observe a strong metachromasia of the ground substance. View through optical microscope, 40x magnification. Metachromasia (var. metachromasy ) is a characteristic change in the color of staining carried out in biological tissues , exhibited by certain dyes when they bind to ...
Promyelocytes measure 12–20 microns in diameter. The nucleus of a promyelocyte is approximately the same size as a myeloblast but their cytoplasm is much more abundant. [1] They also have less prominent nucleoli than myeloblasts and their chromatin is more coarse and clumped. [1] The cytoplasm is basophilic and contains primary red/purple ...
A basophil granulocyte is surrounded by lightly staining eosinophilic erythrocytes in an H&E staining. Eosinophilic (Greek suffix -phil-, meaning loves eosin) is the staining of tissues, cells, or organelles after they have been washed with eosin, a dye. Eosin is an acidic dye for staining cell cytoplasm, collagen, and muscle fibers.
Basophilia is the condition of having greater than 200 basophils/μL in the venous blood. [1] Basophils are the least numerous of the myelogenous cells, and it is rare for their numbers to be abnormally high without changes to other blood components.