Recently a remarkable decrease in the resistance to infection with Listeria monocytogenes
and Toxoplasma gondii in pregnant mice was demonstrated. Since activated macrophages
are important in the resistance against these organisms, studies were performed to
determine whether pregnancy has an adverse effect on the activation of macrophages and
effector functions of these macrophages. Peritoneal macrophages from normal pregnant and
virgin mice or from pregnant and virgin mice previously injected with Corynebacterium …