An antigen immunologically related to the external domain of gp185 is shed from nude mouse tumors overexpressing the c-erbB-2 (HER-2/neu) oncogene. - Langton,B.C.; Crenshaw,M.C.; Chao,L.A.; Stuart,S.G.; Akita,R.W.; Jackson,J.E. (Cancer Res, 1991)