JoAnn has a cold. She is coughing up mucus (a respiratory secretion). JoAnn's lungs are the in the chain of transmission. The mucus from her cough is the
in the chain of transmission.

you should seek treatment when you are seriously thinking of sui.cide, and that can eventually lead to your own death.

a. life is life.

because life is not always nice.

and life is not always fun and cute.

answerchlamydia;