eCig Exposure of E12.5 to E18.5 and E14.5 to E18.5 in C57BL/6 mouse Preprocessed (control + eCig4) batch 1

Pregnant C57BL/6 mice were housed under standard conditions and exposed to electronic cigarette vapor using a nose-only delivery system. Exposure was initiated at either embryonic day 12.5 or 14.5 and continued daily until E18.5. Mice received brief, controlled exposures each day, and experimental groups were assigned based on timing of exposure. At E18.5, placental and fetal tissues were collected for downstream molecular analyses. This record only include control x 4 + eCig4 x 4 group due to the large size of files. Please see batch 2 for the rest of the data.妊娠C57BL/6小鼠饲养于标准环境中，采用仅鼻暴露递送系统使其暴露于电子烟蒸气。暴露程序于胚胎第12.5天或14.5天启动，每日持续开展直至胚胎第18.5天。每日对小鼠实施短时可控暴露，实验分组依据暴露时间节点进行划分。于胚胎第18.5天采集胎盘及胎儿组织，用于后续分子生物学分析。鉴于文件体量较大，本数据集仅涵盖对照组与电子烟（electronic cigarette, eCig）暴露组（每组各4个重复样本）。其余数据集请参见批次2。