Effect of mouse hepatitis virus infection on "natural killer cell" activity in nude mice.
D000818:Animals; D006524:Hepatitis, Viral, Animal / Q000276:immunology*; D007694:Killer Cells, Natural / Q000276:immunology*; D051379:Mice; D008819:Mice, Nude / Q000276:immunology*; D006517:Murine hepatitis virus; D013154:Spleen / Q000276:immunology