Answer:It produces antigens which stimulate a fever.
Explanation:
Spiral galaxies fall into several classes depending on their shape and the relative size of the bulge and elliptical galaxies are placed in the categories E0-7 depending on their degree of ellipticity. they are similar because t<span>hey have a uniform luminosity and are similar to the bulge in a </span>spiral galaxy<span>, but with no disk</span>
1.b
2.d
3.a
this is the answer to your qeustion.
