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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... He had tested tuberculin, which consisted of proteins he'd extracted from the tuberculosis bacterium, on guinea pigs, but only on a handful of people - including his then-mistress, 16-year-old Hedwig Freiberg, who for some reason later married him anyway. He'd seen some evidence that humans suffered worse side effects than guinea pigs, including fever, nausea, and joint pain, but dismissed the problem in his haste to get the drug to market. ... "
" ... Here a person is giving a tuberculin skin test. It is probably better to wear gloves while doing ... [+] this. (Photo By BSIP/UIG Via Getty Images) ... "