[Changes in the number of T and B lymphocytes in the blood of pigs after experimental ascaridiosis].

The changes in the number of the T and B dependent cells in the peripheral blood were studied after experimental invasion of piglets (live weight 8-10 kg) with the eggs of Ascaris suum (50 000 eggs per piglet). The detection of both cell populations by two rosette methods (E and EAC) showed that their first rise set in on the third day from invasion. The maximum occurrence of the T and B cells was recorded 17 days from invasion; on the 20th day from invasion their number returned to the initial level. At the same time, the test animals were studied as to the white component of their blood picture. The results of the haematological study were found to show a direct relationship with the results of the rosette methods. It follows from the study that in the specific host the susceptibility of the T and B lymphoid cells to the antigenic signal starts already in the early stage of invasion.