Chlorocholine chloride disrupts differentiation of rat stem/progenitor Leydig cells: A combined in vivo and in vitro study by Leydig cell regeneration model - Haoran Zhang; Yijia Li; Xiaoxia Wang; Chenping Kang; Qiong Zhang; Jiawei Yang; Jianjun Jiang; Qianqian Xiao; Weidong Hao (Environmental Toxicology and Pharmacology, 2026)