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Table 2 Immune responses against Giardia and control antigens as measured by 3H-thymidine proliferation assay

From: Giardia-specific cellular immune responses in post-giardiasis chronic fatigue syndrome

  Exposed Unexposed p-values
Stimulation agent No PI-fatigue controls (n = 19) PI-CFS & ICF (n = 19) Fatigue other cause (n = 9) Recovered from fatigue (n = 9) Healthy controls (n = 10) Exposed n = 56)vs unexposed (n = 10) No PI-fatigue controls (n= 19) vs PI-CFS/ICF(n = 19)
Giardia ass A 10 μg/ml 12.8 (13.0) 15.3 (19.9) 20.3 (10.9) 15.1 (65.0) 3.5 (6.2) 0.001 ns*
Giardia ass B 10 μg/ml 12.2 (13.9) 13.3 (15.3) 23.3 (13.4) 15.3 (39.0) 3.5 (4.7) <0.001 ns*
Tuberculin (PPD)10 μg/ml 26.3 (34.1) 34.0 (47.5) 54.9 (84.5) 42.5 (23.2) 27.7 (27.0) ns ns*
LP S Stypi 1 μg/ml 21.5 (18.6) 14.4 (13.2) 38.2 (34.3) 21.9 (19.5) 17.7 (10.5) ns ns*
C albicans 10 μg/ml 7.0 (9.1) 5.8 (11.9) 10.0 (32.0) 14.6 (6.0) 11.0 (9.4) ns ns*
aCD3aCD28(pos ctr) 70.6 (35.4) 51.4 (33.0) 51.8 (44.1) 51.8 (63.9) 60.1 (39.8) ns ns*
  1. *KruskalWallis test across all exposed groups was not significant (below p = 0.05). ns = not significant
  2. Proliferation responses are expressed as median stimulation indices (counts per minute(cpm) in stimulated triplicate cultures divided by cpm in unstimulated triplicate cultures) followed by standard deviation