A novel ternary heterostructure with dramatic SERS activity for evaluation of PD-L1 expression at the single-cell level Feng, Enduo ; Zheng, Tingting ; He, Xiaoxiao ; Chen, Jinquan ; Tian, Yang Abstract Publication: Science Advances Pub Date: November 2018 DOI: 10.1126/sciadv.aau3494 Bibcode: 2018SciA....4.3494F