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GCSE Combined Science · key term
Testing many substances to identify those that have a useful effect on a chosen target.
Used by OCR
Specification B6.3k, B6.3r · Biology Paper 2
Testing people for signs of a disease so that it can be detected early, potentially before symptoms appear.
Describe the stages in order: discovery and screening → preclinical testing → clinical trials.
Link each use of genomic information to a benefit: risk prediction can guide screening; treatment selection can improve effectiveness or reduce side effects.
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