COLOR VISION DEFECT
\kˈʌlə vˈɪʒən dˈiːfɛkt], \kˈʌlə vˈɪʒən dˈiːfɛkt], \k_ˈʌ_l_ə v_ˈɪ_ʒ_ə_n d_ˈiː_f_ɛ_k_t]\
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Defects of color vision are mainly hereditary traits but can be secondary to acquired or developmental abnormalities in the CONES (RETINA). Severity of hereditary defects of color vision depends on the degree of mutation of the OPSIN genes (on X CHROMOSOME and CHROMOSOME 3, HUMAN) that code the photopigments for red, green and blue.
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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.-.