Feulgen reaction is a cytochemical test for the detection of:
Feulgen reaction: It is an aldehyde specific reaction based on the formation of a purple coloured compound when aldehyde reacts with fuchsin-sulfuric acid. It is used in histology to identify chromosomal material or DNA in cell specimens. Ref: DNA Cytometric Analysis By Andre's Sampedro, Page 78
DNA
m-RNA
t-RNA
All of the above