The existence of microorganisms as a cause of disease is no longer a matter of theory, but a demonstrated fact.
Germ theory, tuberculosis
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"The isolation of disease-causing microorganisms is the first step towards controlling them."
Shocking"The greatest joy of a scientist is to make a new discovery."
Shocking"A doctor must be able to do two things: see microscopically and think logically."
Strange & Unusual"My work has shown that specific microorganisms cause specific diseases."
Shocking"The bacillus is not the sole cause of tuberculosis."
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