Abstract
Summary
Embryonated chicken eggs showed increased resistance to infection with lethal doses of S. typhimurium as a result of treatment with specific antiserum, or by implantation of splenic tissue from adult chickens, or by combinations of these treatments. The treatments studied, in order of decreasing effectiveness, were: implantation of spleen tissue from immunized donor on 8th day, together with inoculation of antiserum on the day of challenge (13th or 15th day); implantation of spleen tissue from non-immunized donor together with antiserum treatment; antiserum alone; implantation of spleen tissue alone, either from normal or immunized donor; normal serum.
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