Wright and others, in recent work on opsonins, have shown that, by injecting dead cultures of the causal agent into subjects infected with the organism, there is produced in the body fluids a substance (opsonin) which apparently in favourable conditions unites with the living causal bacteria and so sensitizes them that they are readily taken up and destroyed by the phagocytic cells of tissues. [Please select]
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What a great thing it is, this human suffering, which so sensitizes our sympathy, and makes us tender to another's pain. [Please select]
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