According to Zhang Zhixiang, a professor at Beijing Forestry University, the widespread planting of Cupressaceae trees, especially Chinese juniper, is the main source of tree pollen in Beijing ...

Birch pollen allergy DBPC SLIT with rec Bet v 1 compared with placebo 112 total, 28 placebo, 84 active treatment, 16 withdrawals [98] † Patients who entered the study. ‡ Patients who could be ...