CASP12 and infection: To determine if increased interferon production and limitation of MCMV spread in the retina of wild type mice at later stages of infection is associated with increased in situ caspase-12 expression, eyes were removed from MCMV-infected mice at days 4, 7, and 14 p.i, and neural retinas and posterior eye cups were removed for analysis of caspase-12 expression by Western blot.