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Description: | Dysdercus C.V. X good (scratched on the glass slide) MANU PONTERCORVO,Guido. 1946 Glasgow University, Glasgow, Scotland. These are specimens of the testes of *Dysdercus intermedius* the cotton stainer bug. The fixative is unknown but possibly insect Ringer's solution. Sydney Ringer (1834-1910) British Clinician and pharmacologist.
The specimens are possibly stained with Feulgen's stain, A specific histochemical test for chromosonal material or DNA using sections or cells that are hydrolysed in hydrochloric acid producing apurinic acid (DNA, from which the purine bases have been removed) then reacted with Schiff's reagent to produce a magenta stain. Robert Feulgen (1884-1955) German nucleic acid biochemist and cytochemist, and H. Rossenbeck, in 1924.
From the context of where the specimens were found the process undergone was probably meiosis; the cell division in sexually reproducing organisms causing a reduction in the number of chromosomes, in the reproductive cells, from diploid (paired chromosomes) to haploid (single chromosomes) thus leading to the production of gametes (asexual) animals or plants.
May be connected with work done on Chinese sandflies as vectors for *Leishmania* published in 1931 by professor Edward Hindle (1886-1973) Chair of Zoology at Glasgow University.. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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