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The results showed that both sharks can taste bitter substances also perceived by humans, such as colchicine or bile acid.

Colchicum corms contain colchicine, a powerful alkaloid that’s been used in pharmaceuticals for years.

After Ms. Bowman’s death, investigators collected information about Dr. Bowman’s internet searches, including research they said he had done earlier in August into the drug colchicine, which is used to treat gout.

The medical examiner’s office halted the order for cremation, citing suspicious circumstances, according to a criminal complaint, and an autopsy showed Betty Bowman died from toxic effects of colchicine, a medicine used to treat gout.

In addition to identifying three drugs that treat COVID-19, the study helped rule out several others, including aspirin, the antimalarial hydroxychloroquine, the HIV drug combination lopinavir/ritonavir, and colchicine, an anti-inflammatory drug.