| 释义 |
pyronin Chem. and Biol.|ˈpaɪərənɪn|
Also ine |-iːn|, and with capital initial.
[a. G. pyronin (trade name), prob. f. pyro- pyro- + -in -in1, -ine5 with inserted n.]
Any of a class of synthetic red xanthene dyes employed chiefly as microscopic stains; now esp. either of two such dyes, called pyronin G or pyronin Y and pyronin B.
1895Jrnl. Chem. Soc. LXVIII. i. 47 Formaldehydetetramethylamidofluorimum chloride, the zinc double salt of which is known commercially as pyronine. 1906Practitioner Nov. 666 Stained with pyronin and methyl green, the nuclei were large, rounded, pale, and contained chromatin in ‘lumps’. 1952K. Venkataraman Chem. Synthetic Dyes II. xxiv. 745 Pyronines are obtained by condensing m-dialkylaminophenols with formaldehyde in presence of concentrated sulfuric acid, and oxidizing the xanthene derivative. 1957Nature 31 Aug. 440/1 Both the nucleolus and the puffs stain bright red with pyronin. 1960E. Gurr Encycl. Microscopic Stains 340 Pyronin B..is in fairly frequent use in bacteriology and in animal and plant histology. Ibid. 341 Pyronin Y finds its chief application..in conjunction with methyl green for demonstrating nucleic acids. 1960New Biol. XXXI. 99 Their cytoplasm is unusually strongly stained by dyes, such as pyronine, which specifically combine with ribonucleic acid. 1974H. C. Cook Man. Histol. Demonstration Techniques ii. 43 For better results the pyronin should be of ‘Y’ or ‘G’ type in preference to the ‘B’ variety. |