Expression of surface markers by alveolar macrophages from 10 individuals 2–3 weeks before and 1day after exposure to corn dust
| Before | After | p-value | |
| CD11 | 172 (64–229) | 114 (90–140) | ns |
| CD14 | 57 (41–66) | 101 (90–110) | <0.01 |
| CD16 | 231 (211–268) | 155 (126–183) | <0.01 |
| CD54 | 70 (42–78) | 79 (58–86) | ns |
| CD86 | 89 (78–98) | 71 (60–79) | ns |
| HLA class I | 1452 (1432–1759) | 835 (664–1056) | <0.05 |
| HLA class II | 2030 (1805–2202) | 1009 (753–1539) | <0.05 |
Data are presented as median value (interquartile range). Values show mean fluorescence intensity levels for each marker
HLA: human leukocyte antigen
ns: nonsignificant