Research Article

Short-Term Exposure to Tobacco Toxins Alters Expression of Multiple Proliferation Gene Markers in Primary Human Bronchial Epithelial Cell Cultures

Table 3

Percent staining of MKI67 in cultures exposed for 24 hours. All values expressed as percentages.

MKI67Percent (%)
Positive small cellsNegative small cellsPositive large cellsNegative large cells

Nickel sulphate93.66.3020
Benzo(b)fluoranthene92.67.30.319.6
N-nitrosodiethylamine7822119
NNK84.315.6119