Treatment results for hamster enteritis are often poor

Serologic diagnosis of infection with Mycoplasma pneumoniae can be made by

A) a single serum. B) paired sera, drawn two months apart. C) a single serum in conjunction with type O Rh-negative erythrocytes at 4°C. D) paired sera, drawn two weeks apart.

The mass created in the mouth by food mixed with the saliva and mucus is called a(n) ________.

Fill in the blank(s) with the appropriate word(s).