@article {542706,
	title = {Protect the killer: CTLs need defenses against the tumor.},
	journal = {Nat Med},
	volume = {8},
	number = {8},
	year = {2002},
	month = {2002 Aug},
	pages = {787-9},
	keywords = {Animals, Antigens, CD, Antigens, CD274, Antigens, CD80, Antigens, Surface, Apoptosis, Apoptosis Regulatory Proteins, Blood Proteins, Humans, Membrane Glycoproteins, Mice, Models, Immunological, Neoplasms, Peptides, Programmed Cell Death 1 Receptor, T-Lymphocytes, Cytotoxic, Tumor Escape},
	issn = {1078-8956},
	doi = {10.1038/nm0802-787},
	author = {Freeman, Gordon J and Sharpe, Arlene H and Kuchroo, Vijay K}
}
