5. How does the body's immune system respond to recognized antigens? a. It uses antibodies to mark the antigen for destruction
b. It makes more antigens to fight off the invaders.
c. It makes red blood cells to match the "Type” of the antigens
d. It sends a negative feedback signal reduce inflammation
e. It sends a positive feedback signal to maintain homeostasis

[content deleted] - user123802726recklesschicken

the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.