Methyl green pyronine stain

Methyl green pyronine stain


The methyl green - pyronine stain enables both DNA and RNA to be detected.
Methyl green and pyronine are basic dyes that bind to nucleic acids.
Methyl green stains DNA but it is not a specific dye of DNA. Used alone on whole cells, it stains almost everything and in particular the pectocellulosic wall. To increase its apparent specificity, it must be used with a complementary dye.
Pyronine stains RNAs in pink - red.
In the nucleus, the chromatin is stained with methyl green while the nucleoli are strongly stained with pyronine. Chromatin corresponds to interphase chromosomes, one of whose constituents is DNA. At the level of the nucleoli (without membrane) are gathered many molecules of RNA. These are rRNA molecules that are synthesized and assembled into ribosomal subunits at the level of the nucleoli.
The cytoplasm is also stained by pyronine. The pink beaches correspond to areas rich in rRNA, the participation of other RNAs (tRNA and mRNA) in the staining being practically anecdotal.

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26777-01
 500mL 
18710-02
 250mL 
18710-05
 500mL