Gratz, Meike S N1L is an ectromelia virus virulence factor and essential for in vivo spread upon respiratory infection. [electronic resource] - Journal of virology Apr 2011 - 3557-69 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1098-5514 Standard No.: 10.1128/JVI.01191-10 doi Subjects--Topical Terms: AnimalsBody WeightEctromelia virus--pathogenicityEctromelia, Infectious--pathologyFemaleGene DeletionHistocytochemistryImmune ToleranceLiver--pathologyLung--pathologyMiceMice, Inbred C57BLRespiratory Tract Infections--pathologySpleen--virologySurvival AnalysisT-Lymphocytes--immunologyViral LoadViral Proteins--geneticsVirulence Factors--genetics