Cryptosporidiosis is a diarrheal disease caused by microscopic parasites, Cryptosporidium, that can live in the intestine of humans and animals and is passed in the stool of an infected person or animal.ou can become infected after accidentally swallowing the parasite. Cryptosporidium may be found in soil, food, water, or surfaces that have been contaminated with the feces from infected humans or animals.
Purinergic receptors, also known as purinoceptors, are a family of plasma membrane molecules that are found in almost all mammalian tissues.1 and P2Y receptors are known to be widely distributed in the brain, heart, kidneys, and adipose tissue. Xanthines (e.g. caffeine) specifically block adenosine receptors, and are known to induce a stimulating effect to one's behavior.
Opiate antagoniosts are drugs that bind to the opiate receptors without activating them and prevent agonists from binding to the receptors. In brief: Agonist definition. That means drugs that bind to and activate one of the opiate receptors on the surface of cells. There are a number of different opiate receptors. The mu receptor is the one responsible for pain relief. Opiate antagoniosts are drugs that bind to the opiate receptors without activating them and prevent agonists from binding to the receptors.