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.
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..
Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..
Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..