A Novel Electrochemical Immunosensor Based on COF-LZU1 as Precursor to Form Heteroatom-Doped Carbon Nanosphere for CA19-9 Detection - Qiu, Ren; Dai, Jianmin; Meng, Lingqiang; Gao, Hongmin; Wu, Mengdie; Qi, Feifan; Feng, Jing; Pan, Hongzhi (Applied Biochemistry and Biotechnology, 2022)