|   | 
        Proinflammatory | 
        Type 1 cytokines | 
        Type 2 cytokines | 
        Type 3 | 
       
      
        |   | 
        cytokines | 
          | 
          | 
        cytokine | 
       
      
        |   | 
        IL-1 | 
        TNF-α  | 
        IFN-α  | 
        IL-12 | 
        IFN-γ  | 
        TNF-β  | 
        IL-2 | 
        IL-4 | 
        IL-6 | 
        IL-10 | 
        TGF-β  | 
       
      
        | NOD mice | 
        ++ | 
        ++ | 
        0 | 
        ++ | 
        ++ | 
        ++ | 
        ++ | 
        + | 
        ++ | 
        + | 
        + | 
       
      
        | BB rats | 
        ++ | 
        ++ | 
        ++ | 
        ++ | 
        ++ | 
        ? | 
        ++ | 
        0 | 
        ? | 
        + | 
        + | 
       
      
        | Humans | 
        0 | 
        nd | 
        ++ | 
        ? | 
        ++ | 
        ? | 
        nd | 
        0 | 
        0 | 
        ? | 
        ? | 
       
         
    ++: cytokine presence correlates with β-cell destructive insulitis; +: cytokine presence correlates with benign insulitis; 0: cytokine presence does not correlate with either destructive or benign insulitis; nd: not detected; 
    ?: not reported; NOD: Non-Obese Diabetic mice; BB: Biobreeding rats; Humans: pancreas of humans with IDDM |