cis-B7:CD28 interactions at invaginated synaptic membranes provide CD28 co-stimulation and promote CD8+ T cell function and anti-tumor immunity

Yunlong Zhao, Christine Caron, Ya-Yuan Chan, Calvin K. Lee, Xiaozheng Xu, Jibin Zhang, Takeya Masubuchi, Chuan Wu, Jack D. Bui, Enfu Hui