Which of the following cells is known as a “helper” cell because it sends out lymphokines to stimulate the immunologic response?

Looking at this picture, this patient presented for a routine examination, with no chief complaint. The periapical radiograph viewed here is most representative of a:

Why do intraepithelial blisters due to separation between epithelial cells occur with Pemphigus Vulgaris?

In the immune system, antibodies (also known as immunoglobulins) are proteins that are:

A condition usually found on the lateral borders of the tongue in which the Epstein-Barr virus is found is called:

Autoimmune diseases are also known as connective tissue diseases. Autoimmune diseases are a result of a decrease in our antibody production to certain connective tissue components.

Which term refers to the adhesion of the tongue to the floor of the mouth?

Which condition is not considered to be a variation of normal?

Looking at this picture, this 26-year-old woman came in on an emergency basis complaining of a “fat lip” that suddenly appeared overnight. She said she has not taken any medication but has been under some recent stress. 

Tzanck cells are seen in which condition?