Fig. 12
Level of surfactant protein-D (SP-D) in the BALF and plasma of rats after inhalation exposure to CWAAP-A for 13 weeks. SP-D level in the BALF (a, b) and plasma (c, d) were measured by an enzyme immunoassay and are shown by sex (males: a and c; females: b and d). Statistical significance was analyzed using William’s multiple comparison test compared with age-matched control (0 mg/m3) groups: *p < 0.025, **p < 0.005 and ***p < 0.0005