Which Immunopathology involves a decreased number or activity of white blood cells?

Upon oral examination, a 4-year-old child is found to have intensely inflamed gingival, difficulty in swallowing, fever, lymphadenopathy, and small fluid-filled vesicles in the oral cavity. The diagnosis is probably which of the following?

Which type of hypersensitivity reaction involves an immune complex reaction?

Which of the following is the skin test used to determine if an individual has been exposed to and/or infected with Mycobacterium tuberculosis?

Which of the following best relates to a macrophage cell in the immune system?

Both Aphthous and Herpes oral ulcers are recurrent and painful.

Which type of hypersensitivity reaction involves a cell-mediated type reaction?

Tertiary Syphilis has a clinical called a Gumma which may appear in the oral lesion.

HIV infects cells of the immune system. Which of the following is the most important immune system cell affected by HIV virus?

Which of the following is a class of small protein and glycoprotein cytokines produced by T cells, fibroblasts, and other cells in response to viral infections?