Oral sunflower pollen-derived biomimetic delivery system for combined chemoimmunotherapy of colorectal cancer - Xin-Yue Xu; Meng Guan; Kai Cheng; Yong-Guo Hu; Li-Li Chen; Zi-Hui Yan; Jie Xiong; Dong Zhou; Jia-Hua Zou; Jin-Xuan Fan; Yuan-Di Zhao; Xiao-Shuai Zhang (Chemical Engineering Journal, 2026)