Table 1. TCDD treatment decreased body weight and lymph node cell numbers 26 days after L. major infection.

	TCDD Treatment
	Vehicle	160 µg/Kg	p
Body weight change (g)	2.23 ± 0.64	-0.23 ± 0.32	0.03
Thymus/Body weight (mg/g)	2.11 ± 0.36	0.91 ± 0.07	0.03
Total lymph node cells (x 10-6)	108.6 ± 21.4	5.3 ± 0.8	0.001
Percent CD4+	28.3 ± 2.3	18.7 ± 3.8
Percent CD4+CD25+	12.3 ± 0.9	23.0 ± 3.2	0.03
Percent CD8+	13.0 ± 1.0	9.7 ± 1.9
Percent CD45R+	54.7 ± 2.3	58.0 ± 3.5

Female wild type BALB/c mice were treated with peanut oil (vehicle) or TCDD (160 µg/Kg per os) one day prior to infection with one million stationary phase L. major promastigotes in one rear footpad. Data represent mean ± SEM for three animals per treatment group.