OASL and infection: The level of lactate dehydrogenase (LDH) release upon MCMV-M45mutRHIM infection was significantly lower in Oasl1–/– fibroblasts than in Oasl1+/+ fibroblasts, but minimal in both cells upon MCMV-WT infection (Fig. 1d, right, and Extended Data Fig. 1f).