This article uses a real-life example to illustrate the concept and methodology of recombineering,a revolutionary geneti......

该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

旨在从牛发情周期第一卵泡波中最大卵泡ODF1(The largest follicle at onset of deviation)和第二大卵泡ODF2(The second largest ......

精子尾部是由位于曲精细管上皮的精原干细胞经历有丝分裂、减数分裂后,在精子变态过程中形成。尾部是精子的代谢与运动器官,与精子......