Answer:
Superantigens produce intense immune responses by stimulating lymphocytes to produce cytokines.
Explanation:
Superantigens are a group of bifunctional proteins that interact with at least two receptors expressed on different cells. The superantigen´s receptors in lymphocyte T is located in the same place where the lymphocyte interacts with a conventional antigen, RCT. The capability of these superantigens to join their receptors in many T cells, shoots a series of processes that conduce to cellular activation, differentiation, proliferation, and great production and release of cytokine.
Superantigens constitute the most potent natural immunostimulators known.
Depends on two factors: mass and distance.
Answer:
liver and skeletal muscle
Answer: Photic zone
In an aquatic ecosystem, the region where photosynthesis can occur is called the photic zone.
The <span>photic zone or</span> euphotic zone<span> is the uppermost layer of water in a lake or ocean that is exposed to intense sunlight. On the average, </span><span>the photic zone of an ocean reaches around 200 meters in depth. At this depth, enough sunlight can penetrate to permit photosynthesis which encourages the growth of a wide variety of flora and fauna. </span>
