Multiple Choice
The tuberculin skin test, or PPD test, is based on
A) delayed hypersensitivity cell-mediated immunity to certain antigenic components of the organism.
B) injection of M.tuberculosis under the skin and subsequent mild cutaneous infection.
C) antigen-antibody reactions occurring at the injection site.
D) All of the above are correct.
Correct Answer:
Verified
Correct Answer:
Verified
Q10: A positive tuberculin skin test,or PPD test,is
Q12: Slow-growing nontuberculous mycobacteria whose colonies are pigmented
Q13: Optimal conditions for recovery of M.haemophilum from
Q15: The fluorochrome method of staining Mycobacterium<br>A)is less
Q16: In identification of mycobacterial isolates, the niacin
Q18: For reliable results, the niacin test should
Q19: Slow-growing nontuberculous mycobacteria whose colonies become pigmented
Q20: Slow-growing nontuberculous mycobacteria whose colonies produce no
Q21: The recent emergence of epidemic multidrug-resistant strains
Q22: Under what circumstance might slow-growing mycobacteria appear