210 Biological Stains 



t50 RHEONINE a C. I. NO. 795 



Synonyms: Rheonine ALy G or N. Fast phosphine NAL. 



{A basic dye; absorption maximum about ^6^.5) 



Although seldom called for in biological work, this dye is men- 

 tioned by Pick (1935) as a fluorochrome useful in vital staining of 

 the frog. 



