Before you can start your clinical rotation, you are required to get a tuberculosis (TB) test. The clinician injects a small amount of tuberculin purified protein derivative (PPD) under the skin of your forearm. Within about 30 minutes, you develop a swollen, itchy rash on your forearm where the PPD was injected. What type of hypersensitivity is this? What might have caused this result?

Before you can start your clinical rotation, you are required to get a tuberculosis (TB) test. The clinician injects a small amount of tuberculin purified protein derivative (PPD) under the skin of your forearm. Within about 30 minutes, you develop a swollen, itchy rash on your forearm where the PPD was injected. What type of hypersensitivity is this? What might have caused this result?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter17: Genes And The Immune System

Section: Chapter Questions

Problem 30QP

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Similar questions

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