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when humans construct or alter the genome of an organism.
when the body makes its own antibodies when deliberately exposed to a dead or weakened pathogen...
the development of a distinct head, with a concentration of nervous tissue and sense receptors...
microscopic canals running longitudinally through compact bone tissue that contain blood vessels...
an infection of the skin, caused by a parasitic mould. It causes small, red itchy circles on the...
an atmospheric gas made of three oxygen molecules bonded together (O3).