Anti-viral memory T cell responses in the absence of IgG production in a COVID-19 convalescent individualLing Ni, Fang Ye, Qin Qiao, Yu Feng, Yazheng Yang, Hui Zhao, Li-Nan Zhang, Meng-Li Cheng, Gengzhen Zhu, Xiaoli Li, Xuan Zhong, Ruifeng Li, Cheng-Feng Qin, Fang Chen and Chen DongNatl. Sci. Open, 1 1 (2022) 20220009DOI: https://doi.org/10.1051/nso/2021003