Effects of the combination of Lactobacillus helveticus and isomalto-oligosaccharide on survival, gut microbiota, and immune function in Apis cerana worker bees. - Fang, Pingping; Lei, Qingzhi; Lv, Mingkui; Xu, Le; Dong, Kun; Zhao, Wenzheng; Yue, Dan; Cao, Zhenhui; Lin, Qiuye (Letters in Applied Microbiology, 2023)