MARK THOMAS / SCIENCE PHOTO LIBRARY MARK THOMAS / SCIENCE PHOTO LIBRARY
Mantoux solution, tuberculosis (TB) test. The syringe will be used to inject Mantoux solution (containing tuberculin) from the vial into the skin of a patient's arm. The immune response will determine whether the patient has TB, an infection by the bacterium Mycobacterium tuberculosis. It usually infects the lungs and can cause severe scarring. Once diagnosed, a TB infection is treated by a course of antibiotic drugs, often several taken in combination. If the infection is not completely eradicated, then drug-resistant forms can develop. Photographed in the UK.
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