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Epidemiologists look for the causes of disease, such as toxic waste and industrial pollution, at the
The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve
A histologic slide showing the sponge-like architecture of a patient with Creutzfeldt-Jakob Disease.
Amyloid plaques (stained blue) in the brain of a deceased patient who had Alzheimer’s disease.
A child with rickets
Epithelial injury and repair in airway disease