soluble antigen viral antigen that remains in solution after the particles of virus have been removed by means of centrifugation; in the case of the influenza viruses, it is the internal helical structure, free of the external envelope. Synonym: s antigen...
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..
Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
