出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/02/25 14:12 UTC 版)
Nile red (also known as Nile blue oxazone) is a lipophilic stain. It is produced by boiling a solution of Nile blue with sulfuric acid. As can be seen from the structural formulae, this process replaces an amino group with a carbonyl group. Nile red stains intracellular lipid droplets red. Nile red is also intensely fluorescent, with a strong yellow-gold emission when in a lipid-rich environment. It excites at 485 nm, and emits at 525 nm.