NATATION
\natˈe͡ɪʃən], \natˈeɪʃən], \n_a_t_ˈeɪ_ʃ_ə_n]\
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The action of swimming, or of supporting one's self, or moving upon the water. Swimming resembles the horizontal leap in its physiology-the medium being water instead of air. The difference between the specific gravity of the human body and that of water is not great; so that but little exertion is required to keep a part of the body above water. Swimming is a healthy gymnastic exercise, combining the advantages of bathing.
By Robley Dunglison
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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.-.