A) weapons for an evolutionary arms race w/ disease causing organisms
A bad line measurement (aka control) is set up so that you can compare your results from each test against so it gives the values a meaning as it shows how they differ from eachother
It's usually d,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Yes yes hahaahhaqhhahahahaha yes hahaahhaqhhahahahaha yes hahaahhaqhhahahahaha