Inflammatory geometric cells and interleukin 8 concentrations in bronchoalveolar lavage fluid. Figures are means (95% confidence intervals)

Infants with cystic fibrosis
Infected (n=14)*Non-infected (n=20)+Controls (n=9)
Cell concentrations (x106/l):
  Macrophages166 (87 to 316)section63 (32 to 122)85 (53 to 136)
  Neutrophils259 (70 to 968)++17 (8 to 36)4 (1 to 17)
  Lymphocytes9 (2 to 29)3 (2 to 4)7 (3 to 16)
  Epithelial cells6 (2 to 25)11 (5 to 24)10 (3 to 31)
  Squamous cells0.4 (0.3 to 0.5)0.3 (0.2 to 0.5)0.2 (0.1 to 0.3)
  Total cell count794 (384 to 1640)++129 (75 to 223)123 (74 to 204)
Interleukin 8 (ng/l)2013 (1164 to 3784)++26 (13 to 51)23 (8 to 62)
  • *Defined as >/=108 colony forming units of pathogenic bacteria/l or positive viral immunofluorescence or culture.

  • +Defined as <108 colony forming units of pathogenic bacteria/l and negative results in viral studies.

  • ++Significant difference between infected infants and non-infected infants or controls by two sample t test after logarithmic transformation before analysis; for both comparisons P<0.001.

  • sectionSignificant difference between infected infants and non-infected infants or controls by two sample t test after logarithmic transformation before analysis; for both comparisons P<0.05.