Cell profiles in BAL fluid of C57BL/6 mice 24 h post-exposure to cellulose nanocrystals or asbestos via pharyngeal aspiration. (A) Total cells, (B) alveolar macrophages (AMs), (C) polymorphonuclear leukocytes (PMNs), and (D) eosinophils. Three different doses (50, 100, and 200 µg per mouse) were studied to understand the effects of CNC gel/suspension (CNCS) and powder form (CNCP). A single dose (50 µg/mouse) of asbestos (ASB) was considered as a positive control in this study. Means ± SE (n = 5 mice per group). p < 0.05 compared to *control: a dose of α50, β100, or γ200 µg/mouse of CNCS/CNCP, ω50 µg of asbestos particles, δ50 µg of CNCP, or ε50 µg of CNCS particles.