Periodontal disease can be assumed to be active disease sites and progressing if:

All of the following are Gram-negative rods except:

Tobacco use is related to an increased risk for severe periodontal disease. Smokers have a diminished neutrophil function.

The principal antibody in tears and saliva is    

A bacterial product that attracts leukocytes to an area of irritation is  

Long, fine, wavy filamentous structures that are used for motility

A bacterial plaque sample taken from a healthy mouth would show which of the following:

Stage IV or the advanced stage of gingivitis is still a reversible stage of the disease.

Which of the following is not a red complex or high risk pathogen?

In the vascular reaction to inflammation, vasodilation is followed by margination of leukocytes. Later in the process, after an increase in vascular permeability, neutrophils pass through the vessel wall (migration) into the area of inflammation.