Figure 3.

Characterization of inflammatory cells in lung lavage fluid. Differential cell counts were performed on lung lavage cells retrieved from transgene-negative (TG^–) and -positive (TG⁺) mice that had been housed with or without doxycycline-supplemented food over a period of 14 days. At day 1, 7, and 14, mice were sacrificed and lungs lavaged. Differential cell counts were derived from at least 200 cell counts and are expressed as total cell numbers. Data represent the mean ± SD of counts from four to five animals per group. Significant differences in cell numbers compared with that of transgene-negative or –positive mice at day 1 that did not receive doxycycline are indicated with an asterisk. Notice the differences in the scale of the y axis between the graphs.