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“THC, the major active component of marijuana, has anti-cancer properties,” Dr. Peter McCormick, a researcher from University of East Anglia in England and co-author of the study, said in a statement. “This compound is known to act through a specific family of cell receptors called cannabinoid receptors. However, it was unclear which of these receptors were responsible for the anti-tumor effects of THC.”

When the researchers applied THC to tumors induced in mice using human breast cancer cells, the interaction between two cannabinoid cell receptors — CB2 and GPR55 — were responsible for THC’s anti-tumor benefits.  Read more