trastuzumab

noun
tras·tu·zu·mab | \ ˌtras-ˈtü-zü-ˌmab \

Medical Definition of trastuzumab 

: a genetically engineered monoclonal antibody that is administered by injection to slow or inhibit tumor growth in some advanced breast cancers by blocking a cell membrane receptor which receives signals promoting cancer cell growth — see herceptin

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