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(B) The Feulgen stain is a staining technique discovered by Robert Feulgen and $H$. Rossenbeck in $1924$. It is a cytochemical method used to identify

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Feulgen and Rossenbeck

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(B) The Feulgen stain is a staining technique discovered by Robert Feulgen and $H$. Rossenbeck in $1924$. It is a cytochemical method used to identify chromosomal material or $DNA$ in cell specimens. The method relies on the acid hydrolysis of $DNA$,which exposes aldehyde groups that then react with the Schiff reagent to produce a distinct magenta color,allowing for the visualization of $DNA$ within the nucleus.

Who among the following scientists developed the cytochemical technique for the detection of $DNA$?

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