IL10 and allergic disease: Alveolar MØ from ovalbumin (OVA)-sensitized allergy-susceptible Brown Norway (BN) rats released more IL-10 than alveolar MØ from allergy-resistant Sprague Dawley (SD) rats 24 h after OVA challenge, and the transfer of alveolar MØ from SD rats to the BN rats suppressed the AHR [117].