Which of the following statements is true regarding tuberculin skin testing (TST)?
a. Tests should be read 48 hours after the injection.
b. The size of the TST reaction has nothing to do with erythema but is based solely on induration.
c. It is a type V T-cell mediated immune response.
d. The diameter of the induration is measured in centimeters.
Question 2
Which obstructive lung disease is classified as reversible?
a. Asthma c. Emphysema
b. Chronic bronchitis d. COPD