T cell polarisation in the Preterm Infant and its Impact on Bronchopulmonary Dysplasia LAOCHUN WANG JASON 2019 The chronic lung disease BPD is common in preterm babies, i.e. those born about two-thirds through a normal pregnancy. These babies are dependent on supplemental oxygen for months to years, and their doctors have no effective therapy. I examined blood samples from 51 preterm babies at birth and 4 other time points and found that BPD babies have specific immune polarisation patterns. This finding provides a new understanding of the process driving BPD and lays the foundation for repurposing of a group of existing medicines for use in these tiny patients, bringing hope for relief from this devastating disease.