237 In vitro potency assays for immune checkpoint blockade using human primary cells, murine huGEMM immune cells and patient-derived tumor organoids by Yan, Xuefei, Zhang, Hongjuan, Zhou, Jun, Zheng, Jia, Zhu, Shuang, Zhang, Rui, Zang, Mingfa, An, Annie Xiaoyu, Xu, Xiaoxi, Wang, Shuzong, Xu, Kevin Qijin, Ouang, Davy Xuesong, Li, Henry, Huang, Yujun

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Abstract 502: In vitro characterization of antibodies targeting the SIRPα-CD47 phagocytosis checkpoint using tumor-associated macrophages from HuGEMM™ mice by Yan, Xuefei, Zhang, Hongjuan, Liu, Yi, Zhang, Yahong, Zheng, Lei, Zang, Mingfa, An, Annie Xiaoyu, Xu, kevin Qijin, Ouyang, Davy, Li, Henry, Huang, Yujun

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