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Developing zebrafish embryos exposed to chemical components of cannabis, including tetrahydrocannabinol (THC) and cannabidiol (CBD), suffered detrimental effects, shows a University of Alberta study by biologists. DARRYL DYCK / THE CANADIAN PRESS Cannabis exposure resulted in malformations and lower survival rates for zebrafish embryos, shows a new study by biologists at the University of Alberta. The developing embryos exposed to chemical components of cannabis, including tetrahydrocannabinol (THC) and cannabidiol (CBD), suffered detrimental effects, said Declan Ali, professor in the department of biological sciences, in a Thursday news release. “We found that fewer eggs hatched and fewer fish survived,” said Ali, author of the study. “The embryos also tended to be smaller in length. They exhibited some mild malformations such as cardiac edema and curvature of the back and the trunk.” Researchers also found effects on neurological development, added Ali, associate dean (research) in the faculty of science. Cannabis exposure harms zebrafish embryos: U of A study

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