TNFRSF6B and asthma: DcR3 concentration in our transgenic mouse serum is 268.6 ± 59.2 pg/ml (Additional file 3: Figure S1), which is slightly higher than healthy human (63.7 ± 21.9 pg/ml) but similar to the asthma patients (266.1 ± 60.6 pg/mL) [83].