Cells in BAL fluid at different time points after instillation of biopesticide. Mean number of cells in bronchoalveolar lavage (BAL) fluid from mice (n = 10 per group) 4 hours, 24 hours or 4 days after intratracheal instillation of Vectobac® or Dipel® biopesticide. Instilled doses of biopesticide were 3.4 × 106 CFU/mouse for Vectobac® and 3.5 × 105 CFU/mouse for Dipel®. Sterile water served as vehicle and was used for dilutions. For each mouse, 200 cells were counted and differentiated. Values are means with SEM.