With no excuse and less encouragement he isolated blackleg organisms from sick cattle and prepared an attenuated vaccine of his own.
A few years later, living on the tiny inheritance from his father, a petty banker, and quite carelessly and cheerfully exhausting it, he was analyzing critically the ptomain theory of disease, and investigating the mechanism of the attenuation of virulence of microorganisms.
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The problems of poverty are attenuated by the social safety net.
How vain and foolish, then, thought I, for timid untravelled man to try to comprehend aright this wondrous whale, by merely poring over his dead attenuated skeleton, stretched in this peaceful wood.