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erythromycin

(Encyclopedia)erythromycin ĭrĭthˌrōmīˈsĭn [key], any of several related antibiotic drugs produced by bacteria of the genus Streptomyces (see antibiotic). Erythromycin is most effective against gram-positive ...

Henle, Jacob

(Encyclopedia)Henle, Jacob (Friedrich Gustav Jakob Henle) frēˈdrĭkh go͝osˈtäf yäˈkôp hĕnˈlə [key], 1809–85, German anatomist and histologist. A pupil of J. P. Müller, he taught at Zürich, Heidelberg...

cocklebur

(Encyclopedia)cocklebur or clotbur, any species of the genus Xanthium, widely distributed, coarse annual plants of the family Asteraceae (aster family). They are often persistent weeds; the two-seeded oval burrs ar...

Goldstein, Joseph Leonard

(Encyclopedia)Goldstein, Joseph Leonard gōldˈstīn [key], 1940–, American molecular geneticist, b. Sumter, S.C., M.D. Univ. of Texas at Dallas, 1966. He worked as a biomedical researcher at the National Heart I...

Hunter, John

(Encyclopedia)Hunter, John, 1728–93, Scottish anatomist and surgeon, studied under his brother, William Hunter. A pioneer in comparative anatomy and morphology who is sometimes called the father of modern surgery...

Anfinsen, Christian Boehmer

(Encyclopedia)Anfinsen, Christian Boehmer, 1916–95, American biochemist, b. Monessen, Pa., Ph.D. Harvard Medical School, 1943. He spent the early years of his career in brief research and fellowship positions at ...

plagues of Egypt

(Encyclopedia)plagues of Egypt, in the Bible, the plagues and other troubles brought on Egypt by God through the hands of Moses, because Pharaoh would not let the people of Israel go out of Egypt. The account, in t...

herbal

(Encyclopedia)herbal, early botanical book containing descriptions and illustrations of herbs and plants with their properties, chiefly those qualities that made them useful as medicines or condiments. Most of the ...

center of mass

(Encyclopedia)center of mass, the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with the center of t...

York, house of

(Encyclopedia)York, house of, royal house of England, deriving its name from the creation of Edmund of Langley, fifth son of Edward III, as duke of York in 1385. The claims to the throne of Edmund's grandson, Richa...