TABLE 4.

TNF-like production by peritoneal macrophages from jirds with female or male B. pahangi infection^a

Infection	15 dpi		56 dpi		135 dpi
	No LPS	LPS	No LPS	LPS	No LPS	LPS
Female worm	12.3 ± 0.2	95 ± 73.8	0.9 ± 1.4	173 ± 83	7.7 ± 4.6	42 ± 9.5
Male worm	3.6 ± 0.8	24 ± 2.5	3.2 ± 0.6	138 ± 57	2.3 ± 2.3	5.5 ± 2.3
Control	2.4 ± 0.04	8.7 ± 0	1.2 ± 0.9	7.14 ± 4	3 ± 0.18	6 ± 3.7

^aMacrophage monolayers were untreated (no LPS) or stimulated with 50 ng of LPS for 4 h. TNF-like activity was quantitated with the L929 cell line and expressed as units, defined as the reciprocals of the supernatant dilutions which produced 50% lysis of L929 cells (means ± standard deviations). dpi, days postinfection with B. pahangi. Control, uninfected control.