Wiktionary
ertumaxomab
n. A rat-murine hybrid monoclonal antibody used to treat certain cancers.
Wikipedia
Ertumaxomab
Ertumaxomab (trade name Rexomun) is a rat- murine hybrid monoclonal antibody designed to treat some types of cancer. Phase II clinical trial evaluating the treatment of breast cancer was terminated due to change in Fresenius' development plans. (So they could concentrate on their other product catumaxomab (trade name Removab).)
It is a trifunctional antibody which works by linking T-lymphocytes and macrophages to the cancer cells.