Corpuscle

(kor'-pus-l). A name loosely applied to almost any small, rounded, or oval body. C., Bizzo zero's. See Blood-platelets. C. of Blood, the minute, biconcave, flat discs, circular in man, elliptic in the camel, and oval in birds and reptiles. They are distinguished as red and white, or colorle . Red corpuscles have been divided, according to their size, into norm oblasts (normal in size), megaloblasts or megalocytes (of exce ive size), micro blasts or microcytes (abnormally small), and poi kilo blasts or poikilocytes (of irregular shape and size). The red corpuscles in the blood of man are about in. in diameter and 725577 in. thick. They consist of a colorle stroma infiltrated with coloring-matter (hemoglobin). The white or colorle corpuscles are flattened, binucleated or tri nucleated cells, about m diameter, and exist in the ratio of I: 400 compared with red corpuscles. They po e contractile power, alter their shape readily, and in general appearance closely resemble amebse. They are most numerous in venous blood. The colorle corpuscles are variously designated as eosinophile, basophile, neutrophile, mononuclear, polynuclear, lymphocytes, transitional, large, small, etc. C. of Donne. See Colostrum-corpuscles. C, Eichhorst's, a special form of microcyte in the blood of those suffering from pernicious anemia. C, Gluge's, a variety of large cells containing fat-drops, myelin, or detritus. They are called also Compound Granule- Cells and In flamm a in the papillae of the skin and enveloped by nerve fibers. C. of v. Troltsch, a name formerly given to a series of lymph-channels between the two layers of the lamina propria of the ear. They are spindle-shaped on longitudinal section and stellate on transverse section, and are lined with endothelium. C, Valentin's, the small, roundish amyloid bodies found in nerve-substance. C, Weber's, the sinus pocularis.