BRAIN CONGENITAL ABSENCE
\bɹˈe͡ɪn kənd͡ʒˈɛnɪtə͡l ˈabsəns], \bɹˈeɪn kəndʒˈɛnɪtəl ˈabsəns], \b_ɹ_ˈeɪ_n k_ə_n_dʒ_ˈɛ_n_ɪ_t_əl ˈa_b_s_ə_n_s]\
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A malformation of the nervous system caused by failure of the anterior neuropore to close. Infants are born with intact spinal cords, cerebellums, and brainstems, but lack formation of neural structures above this level. The skull is only partially formed but the eyes are usually normal. This condition may be associated with folate deficiency. Affected infants are only capable of primitive (brain stem) reflexes and usually do not survive for more than two weeks. (From Menkes, Textbook of Child Neurology, 5th ed, p247)
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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.-.