| 单词 | chromogen |
| 例句 | This excludes large areas of homogenous staining and areas of more diffuse, non-specific chromogen deposit. Evidence for human transmission of amyloid-[bgr] pathology and cerebral amyloid angiopathy : Nature : Nature Publishing Group 2015-09-08T04:00:00Z Brown.—Anthracene brown, chromogen, cloth brown, diamond brown, alizarin brown, fast brown, alizarin acid brown, chrome brown, palatine chrome brown, erio chrome brown. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z It is supposed to exist in the cells of algæ, chiefly as a colorless chromogen, which becomes first yellow and then brown on exposure to air. The Chemistry of Plant Life The melanosis or blackening of insect blood, for instance, is due to the oxidation of a chromogen, the pigment produced being known as a uranidine. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" |
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