Re: Staining with Hibiscus flowers
Some years ago I reffereed a paper on an extract of what was a
species of prickly pear from the west coast of Africa, if I remember
The extract was used as an essential "haematoxylin" component of
Papanicolaou Stain. The paper was published in cytopathology.
Unfortunately, M y files and collections from the earlier part of my
career have had to be culledso I cannot give exact references
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