The second line of defense of the immune system, also an aspect of innate immunity, is the nonspecific resistance. These defense mechanisms destroy invaders in a general way and do not target specific antigens.
Double? Sorry I know nothing about this and just wanted to try to help
10 centimeters, w<span>hen the cervix dilates from 0 to 3 or </span>4 centimeters <span>contractions get stronger as time progresses.</span>
this is called acquired immunity
