The percentage of necrotic lymphocytes in the spleen in Group I (infected with T. spiralis and treated with Thymus factor X (TFX)) is significantly lower than in the control group on day 7, and approximately the same as in the control group for the rest of the experiment. The percentage of necrotic lymphocytes in muscle tissue in Group I is approximately the same as in the control group on day 7, significantly lower on days 14 and 21 (p<0.0002), approximately the same on days 28 and 35, significantly lower on day 42, and significantly higher on day 60 (p<0.005)[1].