The answer to this is B. <<<<
Interferon are small proteins (cytokines) that enhance the immune system and defense against viruses and bacterial infections.
Interferon stimulates the infected cells and those nearby to produce proteins. These proteins prevent the virus from replicating within them. Further production of the virus is inhibited<span> and the infection is stemmed.
</span>There are three types of interferon: gamma, alpha and beta. Alpha and beta can be produced from any cell, and gamma is<span> produced only by natural killer cells and T lymphocytes. The main purpose of gamma interferon is to signal the immune system to respond to infectious agents or cancerous growth.</span>
Answer:
Adenosine.
Explanation:
Adenosine is a neurotransmitter that is created in the brain and when it binds to the adenosine receptors, it slows down nerve activity and it creates a sensation of drowsiness.
<u>Caffeine</u> looks like adenosine to the receptors, therefore, when we have caffeine, <u>it binds to these receptors and there is no room left for the adenosine to bind</u>. However, the caffeine doesn't slow down nerve activity but, in the contrary, it speeds it up.
Therefore we can tell that caffeine blocks the receptors for the adenosine thus promoting wakefulness.
A separation is where the couple is still married but aren't together. They could do to couples therapy or surround yourself with people who are in positive realtionships to try to fix it.
