| 
      aThe dose of IL-2 used was 50 International Units/mL.
        | Treatment | CD69 expression (mean fluorescence intensity)
 | IFN- production    (pg/mL) |  
        | Negative control | 2.91 | é 0.11 | 120 | é 60 |  
        | AFAe | 10.16 | é 0.39 | 422 | é 118 |  
        | AFAe + IL-2 | 27.63 | é 1.76* | 4,090 | é 170* |  
        | IL-2 | 17.18 | é 0.17 | 2,690 | é 1,927 |  The increase in response between the treatments with IL-2 alone compared
 to AFAe IL-2 was sta-tistically significant with *P < .05.
 |