Biology · GCSE
One Cause, or Many
Why one disease can be stopped by washing your hands and another only by changing how you live. Four pathogens and four routes in, each with the control that blocks it; the body’s defences, from skin to lymphocytes, and monoclonal antibodies; vaccines and the immune response drawn as a graph; measles, tobacco mosaic virus and coronary heart disease side by side; how a new medicine reaches a patient, from discovery to peer review. Fifteen terms to define, a model answer on herd immunity, and the misconceptions that cost marks.

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