To fight infection, disease, and sickness
A possible answer to this question is <span><span>enterotube. </span>Enterotube is an
example of a fast multitest system used to identify unknown bacteria belonging to the family of Enterobacteriaceae. It consists of tubes with flat sides and contains 12 compartments for different biochemical tests.</span>
I think it would be cold front ^^, I hope it helps!
Pretty easy one, it is simply an element, because elements are the main 'starting points' of any other mixture, per say. This is because they are like building blocks - For example, H20, or water, is a combination of Oxygen and 2 hydrogen, which are all elements.