Brown-shell eggs shows high incidence of blood and meat spots accompanied by unique microbial distribution patterns - Wu, Junfeng; Yan, Yiyuan; Chen, Jiahua; Li, Junying; Li, Guangqi; Wu, Guiqin; Wang, Bin; Zheng, Gang; Yang, Yuqin; Du, Yushuang; Lian, Ling (Frontiers in Nutrition, 2025)