Medical dictionary. 2011.
diazo reaction — n a reaction in which a diazo compound is made or used specif a reaction in various diseases (as typhoid fever) consisting of a red discoloration of the urine on addition of diazobenzenesulfonic acid * * * Ehrlich diazo r … Medical dictionary
Ehrlich test — Ehrlich diazo reaction; see under reaction … Medical dictionary
EHRLICH, PAUL — (1854–1915), German chemist, pioneer of modern histology, immunology, and chemotherapy; Nobel Prize winner. Ehrlich was born in Strehlen near Breslau. He studied at German universities and began his scientific work in 1878 in Berlin University as … Encyclopedia of Judaism
reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… … Medical dictionary
egg yellow reaction — the appearance of a yellow foam in an Ehrlich diazo reaction before the addition of ammonia, thought to indicate acute pneumonia … Medical dictionary
Ehrlich — Paul, German bacteriologist, immunologist, and Nobel laureate, 1854–1915. See Ehrlichia, E. anemia, E. inner body, E. phenomenon, E. postulate, E. diazo reagent, E. theory, E. Türk line. See entries under stain; reaction … Medical dictionary
diazobenzenesulfonic acid — di·azo·ben·zene·sul·fon·ic acid or chiefly Brit di·azo·ben·zene·sul·phon·ic acid .dī .az (.)ō .ben .zēn .səl .fän ik n a white or reddish crystalline acid derivative C6H4N2O3S of sulfanilic acid that is used as the reagent in the diazo reaction * … Medical dictionary
sulfanilic acid — sul·fa·nil·ic acid or chiefly Brit sul·pha·nil·ic acid .səl fə .nil ik n a crystalline acid C6H7NO3S obtained from aniline and used esp. in making dyes and as a reagent * * * sul·fa·nil·ic ac·id (sul″fə nilґik) a white crystalline… … Medical dictionary
Reagent — A substance used to produce a chemical reaction to detect, measure, produce, etc. other substances. * * * Any substance added to a solution of another substance to participate in a chemical reaction. [Mod. L. reagens] amino acid r. a r. used in… … Medical dictionary
test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… … Medical dictionary
