SLC6A4 and asthma: Three months after the end of peri-adolescent asthma treatments, females that had been exposed to HDM during development had greater SERT expression in the brainstem, whereas HDM-exposed males had diminished SERT expression compared to non-HDM exposed mice (Sex × AI interaction—F(1,81) = 6.53, p < 0.05, Figure 5A).