Edible anurans have to rely on more than just poison glands which tend to work too late (i.e. after the predator has it in his mouth!) Related articles: How to Rid Your Garden of Toads-tips for dog owners (aside from training the dog of course!)
Manevalâs staining method is a negative staining method. To stain a capsule of a cell by Manevalâs staining method. 1  1 % Congo red solution.  Manevalâs stain.
Histology Special Stains. Special stains employ staining techniques to identify suspected pathogens or demonstrate specific cellular components that aid pathologists in the evaluation of disease states. Sigma-Aldrich offers the most commonly utilized special stain procedures, with reagents available as prepared solutions or in convenient kit form.