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...
If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..
This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..
Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..
