The immune system is the bodies defense against invaders and is located in all body tissues with concentration in the mucosal surfaces and skin.
I think it’s nucleic acid
<span>Formed alcohol, ethanol has a
structural formula <span>CH3</span><span>−<span>CH2</span></span><span>−<span>OH or it can also be written with chemical formula </span></span>C2H5<span>OH.</span></span>
<span>Ethanol is a simple alcohol produced via the fermentation of
sugars (such as glucose, fructose, and sucrose) by yeasts. Because yeasts do
this conversion in the absence of oxygen, fermentation is an anaerobic process.</span>
