When performing the Kastle-Meyer test, a blood spatter analyst will perform a positive and negative control before testing the samples at the scene. If, during an experiment, both the positive and negative controls produce the same results, what should be done and why?

Ithink the answer is maybe a

Confused on question what should we be answering

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.