POWELL, JOHN W
\pˈa͡ʊɛl], \pˈaʊɛl], \p_ˈaʊ_ɛ_l]\
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born in 1824, was a lieutenant-colonel of Illinois artillery during the Civil War. He secured the establishment of the U.S. Geological Survey and the Bureau of Ethnography at the Smithsonian Institution, and is director of the former.
By John Franklin Jameson
Word of the day
Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.