Negri bodies eosinophilic, sharply outlined, pathognomonic inclusion body’s (2 to 10 um in diameter) found in the cytoplasm of certain nerve cells containing the virus of rabies, especially in ammon’s horn of the hippocampus. Synonym: negri corpuscles...
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
