|
Date: |
|
Description: | T. palmatus cleavage nuclei [gastrula] 3 hours at 3 [degrees Celsius] Orcein (written on a label stuck to the glass slide). MANU PONTERCORVO,Guido. June 16,1942 Glasgow University, Glasgow, Scotland. This is a specimen of the ova (egg) of *Triturus helvetica* Razoumovsky, 1789, the palmate newt. Invalid synonyms are *Triton (Triton) palmatus* Wolterstorff, 1901 and *Triton palmatus forma sequeirai* Wolterstorff, 1905 . The tissue was prepared from the gastrulation stage of an embryo. In the gastrula the cells are rearranged to form a hollow sphere. The gastrula has three germ layers creating a stomach or cup shaped depression and forms after the blastula (a structure consisting of roughly 100-200 cells).
The tissue was stored for 3hrs at 3 degrees Celcius during which time mitosis occured i.e. the replication of a cell to form two daughter cells with identical sets of chromosomes. The tissues were then possibly fixed with a mixture of acetic acid and alcohol. Once fixed it was then stained with orcein (natural red 28), a dye obtained from lichen | 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 |
|
|