@article{Muller_2002 author = {Ludmila Muller and Rolf Kiessling and Robert C. Rees and Graham Pawelec}, title = {Escape Mechanisms in Tumor Immunity: An Update}, journal = {Journal of Environmental Pathology, Toxicology and Oncology}, issn = {0731-8898}, year = {2002}, volume = {21}, number = {4}, }