[Participation of the lung in capturing subcutaneously injected antigens]

Experiments were conducted on guinea pigs. With the aid of fluorescein-labeled antibodies it was shown that following a single or a two-fold immunization into the footpad complete typhoid antigen was revealed in the lung macrophages as soon as the first days (or after a two-fold administration-in several hours) and persisted there for 30 days. There was a tendency to concentration of the antigen-containing macrophages in the perivascular and the peribronchial tissues. The dynamics of the antigen spread along the lymphoid organs is also described.