tristacottrell0 tristacottrell0

03-08-2018
Biology

contestada

Certain preparations contain killed or weakened live biological agents that, upon injection into our body, protect the body against those pathogens. What are these preparations called? A. Vaccines B. Enzymes C. T cells

please helppppppp im on my very last plato test

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stephensimon759 stephensimon759

03-08-2018

The answer to your question is Vaccines

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