URSA
\ˈɜːsə], \ˈɜːsə], \ˈɜː_s_ə]\
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n. [Latin] A boar. Ursa Major, the Great Bear, one of the constellations, situated near the pole—it contains the stars which form the Dipper or Charles’ Wain. Ursa Minor, the Little Bear, the constellation nearest the north pole —it contains the pole-star, which is situated in the extremity of the tail.
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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.-.