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Table 1 Scores of host immune response levels in age-matched pigs with primary and secondary immune responses.

From: Cell-mediated and humoral immune responses in pigs following primary and challenge-exposure to Lawsonia intracellularis

  

Humoral immunity

Cell-mediated immunity

  

Faeces SIgA

Ileum SIgA

Serum IgA

Serum IgG

IFN-γ

Group

Pig #*

d11-48

d67-75

d83/84

d6-48

d67-75

d6-48

d67-75

d11-48

d60-82

RE

37

+

++

+

++

++

+

+

+

++

RE

38

+

+

 

++

+

++

++

+

++

RE

52

+

++

++

+

++

+

++

+

++

RE

55

+

++

++

+

++

+

++

+

++

RE

57

 

+

 

+

+

++

++

+

++

RE

26

+

+

+

+

+

+

++

+

++

RE

39

 

+

+

+

+

+

+

+

++

RE

53

+

+

 

+

 

+

++

+

++

RE

61

+

++

 

+

+

++

+

+

++

RE

64

 

+

 

+

+

 

+

+

++

CC

36

 

++

  

+

 

++

 

+

CC

44

  

+

 

++

 

++

 

+

CC

51

 

++

  

++

 

++

 

++

CC

58

 

+

++

 

+

 

++

+

+

CC

59

 

+

+

 

++

+

++

 

+

CC

66

+

++

++

 

++

 

++

 

++

CC

70

 

+

+

 

++

 

++

 

+

  1. The level of response for L. intracellularis-specific IgA in faeces and ileum content, IgA and IgG in serum, and antigen-specific IFN-γ-production in whole blood cultures were scored for individual pigs from the RE group and the CC group. Summed scores for the primary and secondary infection periods are categorised as: no response (BLANK), low-medium response (+), high response (++). * All pigs in the RE group were protected against re-infection as defined by: absence of bacterial shedding and serum acute phase protein response as well as low or no IHC score at termination of the experiment (see Result section and [6]).