FIG. 2.
Histological analysis of the lung. Respiratory malfunction was identified in mRor1−/− and mRor2−/− newborns. Postmortem histological analysis of the lung demonstrates that the alveolar air sacs in the mutant newborns are not fully expanded as they are in the wild-type (WT) control littermate. In addition, pulmonary bleeding was observed in the mutant mice.