Which of the following does not protect against microorganisms in the mouth?
IgA antibodies
mucus
lysozyme
an unidentified fluid product of the sublingual and submandibular glands that blocks the AIDS virus from infecting human lymphocytes

What is the main purpose of using the combining form in medical terminology? to make a term easier to pronounce to separate a root word from a suffix to change the meaning of the root word in a term to give credit to a scientist for developing a procedure