| 
      SD: Standard Deviation
        |  | Control | Detergent | Blue    Lake |  
        | 7 days  | 20 days  | 7 days  | 20 days  | 7 days  | 20 days  |  
        | Average  | p  | Average | p  | Average | p  | Average | p  |  
        | Mucous    cells | 7,0 (SD-0,8) | 4,8 (SD-0,7) | 9,6 (SD-0,5) | >0,01 | 8,8 (SD-0,9) | >0,01 | 9,0 (SD-0,8) | >0,01 | 8,6 (SD-0,5) | >0,01 |  
        | Chloride    cells | 10,8 (SD-1,4) | 10,1 (1,2) | 11,8 (SD-1,6) | <0,01 | 22,6 (SD-2,5) | >0,01 | 30,1 (SD-1,7) | >0,01 | 39,1 (SD-2,6) | >0,01 |  |