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Here, then, we have indisputable evidence of the fact that the tubercle bacillus may not only enter some of the openings of the body, the nostrils, the mouth, the lungs, but may actually form a lodgment and a growth-colony in the lungs themselves, and yet be completely defeated by the antitoxic powers of the blood and other tissues of the body, prevented from spreading throughout the rest of the lung, most of the invaders destroyed, and the crippled remnants imprisoned for life in the interior of a fibroid or chalky mass.
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