(Encyclopedia) bone marrow, soft tissue filling the spongy interiors of animal bones. Red marrow is the principal organ that forms blood cells in mammals, including humans (see blood). In children,…
(Encyclopedia) lionfish, common name for a genus (Pterois) of the family Scorpaenidae (see rockfish), comprising venomous subtropical marine fish native to the South Pacific, the Indian Ocean, and…
(Encyclopedia) Fort Garry, two trading posts of the Hudson's Bay Company, built on the present-day site of Winnipeg, Man., Canada, at the confluence of the Red and Assiniboine rivers. The first,…
(Encyclopedia) Rh factor, protein substance present in the red blood cells of most people, capable of inducing intense antigenic reactions. The Rh, or rhesus, factor was discovered in 1940 by K.…
(Encyclopedia) polycythemiapolycythemiapŏlˌēsīthēˈmēə [key], condition characterized by an increase in the production of red blood cells, or erythrocytes, in the blood. Primary polycythemia, also…
(Encyclopedia) garnet, name applied to a group of isomorphic minerals crystallizing in the cubic system. They are used chiefly as gems and as abrasives (as in garnet paper). The garnets are double…
(Encyclopedia) Duroc swineDuroc swinedŭˈrŏk, d&oomacr;ˈ– [key], breed originating during the 1800s in the NE United States from crosses among a number of red strains existing in that region. One…
(Encyclopedia) Irish terrier, a breed of hardy working terrier developed in the British Isles and believed to be one of the oldest terriers. It stands about 18 in. (46 cm) high at the shoulder and…
(Encyclopedia) alizarinalizarinəlĭzˈərĭn [key], or 1,2-dihydroxyanthraquinone, mordant vegetable dye obtained originally from the root of the madder plant (Rubia tinctorum), in which it occurs as a…
(Encyclopedia) Selkirk, town (1991 pop. 9,815), SE Man., Canada, on the Red River. Just S of Lake Winnipeg, it is a port for products from N Manitoba. There are steel mills, foundries, and shipyards…
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