单词 | protan |
释义 | protan, n. (a.) Ophthalm.|ˈprəʊtæn| [f. protan- in protanomaly, protanopia, etc.] A protanomalous or protanopic person. Also as adj.
1944D. Farnsworth in Inter-Society Color Council News Let. lvi. 8 There are 3 or more types of Anomaly (chromatic imbalance). 1. n. Protan; adj. Protanous: reduction of red-bluegreen discrimination relative to interesting axis. 1962Lancet 15 Dec. 1269/1 The former includes protan and deutan defects with 3 or more alleles at each locus, and the latter includes true hæmophilia and Christmas disease. 1968[see Ishihara]. 1974Nature 23 Aug. 653/1 It is highly probable that there are at least two gene loci involved in each of four X-linked diseases: colour blindness (protan and deutan), haemophilia (A and B), muscular dystrophy (Duchenne and Becker), and retinal degeneration (retinoschisis and Norrie's disease). |

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