IL10 and infectious otitis media: As shown in Figure 3A, 12-week-old IL10−/− female mice were randomly allocated to three groups (n = 5 or 6 per group) and orally administered PBS (AOM/PBS group), PBS with NL (0.0025% (m/v); AOM/NL group), or PBS with M13–NL (0.0025% M13 (m/v) loaded into 0.0025% NL; AOM/M13–NL group) via their drinking water from the age of 12 to 31 weeks.