Weigert’s iron haematoxylin stain
(Science: technique) A nuclear staining solution containing haematoxylin, ferric chloride, and hydrochloric acid; useful in combination with von Gieson’s stain, especially for demonstrating connective tissue elements or entamoeba histolytica in sections.
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..
This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..