Additionally SP-D reduce airway hyperresponsiveness (AHR) and eosinophilia in either ovalbumin (OVA) [9] or in Af [10] murine models of allergic airways disease and SP-D administration after antigen challenge can attenuate eosinophila and Th2 cytokine production in Dp-sensitized mice [11-13]. Here, SFTPD is linked to airway hyperresponsiveness.