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Erbitux is a drug approved to treat colorectal and head & neck cancer. The drug is a chimeric (mouse/human) monoclonal antibody, and functions by inhibiting an epidermal growth factor receptor (EGFR).[citation needed]
Three different companies have a share of Erbitux revenues:
Eli Lilly and Company (LLY), which purchased ImClone, the original inventor of Erbitux, in 2008, and sells Erbitux in the U.S. with ImClonne's original partner Bristol-Myers Squibb.