Aphthous ulcers may be associated with all of the following precipitating factors EXCEPT one. Which ONE is the EXCEPTION?

Which of the following is associated with gross facial and dental abnormalities?

Which of the following is not a clinical feature of Reiter syndrome?

Bullous pemphigoid affects which age group most frequently?

A mucoceles is caused by trauma and severance of an accessory salivary excretory duct,

Which of the following is most characteristic of basal cell carcinomas?

Which of the following is a common site for orophyaryngeal cancer development?

Which one of the following is the most common form of skin cancer?

All of the following are considered permanent tissue cells EXCEPT one. Which ONE is the EXCEPTION?

Initial exposure to the human herpesvirus results in which of the following?