DNA! the question is a typical descrption of it
Pituitary gland ( insufficient production of STH )
1/2 of a radioactive substance will remain after 3 half lives.
<span>Primary immunodeficiencyvdiseases are a group of more than 250 rare, chronic disorders that affect how the body’s immune system works. Primary immunodeficiency diseases are caused by genetic defects. I hope this helped</span>
