单词例句
The blastula stage of development is the first three-dimensional, embryonic structure that forms from a series of cell divisions in early pregnancy.
囊胚阶段是早期妊娠中细胞分裂形成的第一种三维胚胎结构。
Embryonic stem cells have the remarkable ability to differentiate into any type of cell in the body, making them a promising area of research for regenerative medicine.
胚胎干细胞具有惊人的分化能力，能转化为体内任何类型的细胞，对再生医学研究具有巨大潜力。
Fertilization occurs when a sperm penetrates the zona pellucida of an oocyte, leading to the formation of a single-celled, zygotic embryo.
受精时，精子穿透卵子的透明带，形成一个单细胞的合子胚胎。
In gastrulation, the embryonic disc differentiates into three primary germ layers: ectoderm, mesoderm, and endoderm, which will later form the various organs and tissues.
在原肠运动阶段，胚胎盘分化为外胚层、中胚层和内胚层，这些将发育成各种器官和组织。
The neural tube, which eventually forms the brain and spinal cord, starts to develop during the neurulation phase of embryonic growth.
神经管，最终形成大脑和脊髓的部分，在胚胎神经化阶段开始形成。
Researchers have discovered that certain genetic mutations can lead to abnormalities in early embryonic development, resulting in birth defects or miscarriages.
科学家发现某些基因突变可能导致早期胚胎发育异常，从而引发出生缺陷或流产。
The blastocyst-stage embryo implants itself into the uterine lining, marking the beginning of pregnancy in humans.
囊胚阶段的胚胎植入子宫内膜，标志着人类妊娠的开始。
During gastrulation, the formation of the gut begins with the invagination of the endodermal cells, creating the primitive gut tube.
在胃化阶段，原始肠道管的形成始于内胚层细胞的内陷。
Embryonic development is a highly regulated process, with each step dependent on precise timing and interactions between cells.
胚胎发育是一个高度调控的过程，每个步骤都依赖于精确的时间和细胞间相互作用。
Scientists study the molecular mechanisms involved in embryonic development to better understand how organisms grow and form their complex structures.
科学家们研究参与胚胎发育的分子机制，以更好地理解生物体如何生长并形成复杂的结构。