Soluble programmed death-1 and soluble programmed death ligand 1 protein expression and immune status in patients with recurrent aphthous ulcer

Jiang Nan, Luo Liang, Liu Li, Sun Xiaoqin, Jiang Xing, Cai Yang.

West China Journal of Stomatology . 2017, (3): 286 -290 . DOI: 10.7518/hxkq.2017.03.011