Chicago blue 4B
Description
A large molecular weight dye named pontamine sky blue was suggested as a substitute for methyl blue in Lendrum’s MSB technique for fibrin. It is likely this dye, but positive identification is not possible as a CI number was not given. It was recommended with a comment that its use reduced the tendency of some fibrin to stain with the blue dye.
References
- Edward Gurr, 1971
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England. - Bancroft, J.D. and Stevens A.
Theory and practice of histological techniques Ed. 2
Churchill Livingstone, Edinburgh & London, UK.