this study ( a ) records the phenotypic drift of experimental tumors on transplantation ( most clearly with sp107 ) and the co-expression of cytokeratins and vimentin in putative carcinomas , ( b ) confirms the inadequacy of routine histology for accurate characterisation of such tumors and ( c ) details techniques for a more thorough assessment of state of differentiation that should guide the choice of experimental model .
C0027659
experimental tumors
C0027651
tumors