Tuberculosis vaccines are vaccinations intended for the prevention of tuberculosis. Immunotherapy as a defence against TB was first proposed in 1890 by Robert Koch. Today, the only effective tuberculosis vaccine in common use is bacilli Calmette-Guérin, first used on humans in 1921.
Capillaries are tiny blood vessels in the body. Capillaries do not produce blood cells. Hope this helped
The answer is D. Hope it helped. :)
