Protection of Mice by Interferon against Systemic Virus Infections.

not known. It is conceivable that the heat from the placenta on the anterior wall of a uterus might soak through a thin abdominal wall, but it is difficult to understand how thermal contours were altered by a placenta situated upon the posterior uterine wall of an obese patient with hydramnios as in Case 2. The radiator effect of the umbilicus has been mentioned, but this question remains open and is the subject of further investigation. It is just possible that the vasomotor nervous system is involved to a large extent.