19156044901 (同微信) Research progress on pathogenic mechanism of nontuberculous mycobacterium was assessed by measuring NK-92MI infiltration into lung carcinoma A549 cell spheroids that were formed in low-attachment microplates. The novel pairing of the permeable support system with low-attachment microplates permitted simultaneous investigation of immune cell homing, immune invasion of tumor spheroids, and spheroid cytotoxicity. In effect, the system represents a LI Xiang-fang, DingShou-peng, Gao Jing-hua, WU Li-xian(Department of