You are treating a 20-year-old man who is complaining of purulent penile discharge and dysuria. What is the most likely diagnosis?

Routine inspections include an evaluation of how many layers of blood safety?

a. Two b. Three c. Four d. Five

What is the major source of respiratory tract secretions in the normal lung?

a. Bronchial glands b. Clara cells c. Goblet cells d. Mast cells