The difference between adjacent densities on a radiograph is the

________ results from an increase in the number of goblet cells in the respiratory system

A) Asthma B) Anemia C) Pleuritis D) Chronic bronchitis

In 2006, the CDC revised HIV testing guidelines to recommend HIV testing of individuals during ____.?

A) all routine health visits B) drug rehab visits C) federal incarceration D) psychiatric assessments