Upon ingestion of bacteria, white blood cells release a chemical messenger into the blood stream that causes the synthesis of inflammation response proteins by liver cells. What is this is an example of?

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation:

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

i believe the answer would be b. hope it : )