Combinatorial Loss of the Enzymatic Activities of Viral Uracil-DNA Glycosylase and Viral dUTPase Impairs Murine Gammaherpesvirus Pathogenesis and Leads to Increased Recombination-Based Deletion in the Viral Genome

病毒尿嘧啶-DNA 糖基化酶和病毒 dUTPase 酶活性的组合丧失会损害鼠类伽马疱疹病毒的发病机制并导致病毒基因组中基于重组的缺失增加