n.囊胚；胚包

The blastocyst is the stage in early embryonic development that follows the morula.
胚泡是早期胚胎发育中继囊胚之后的阶段。
The implantation of the blastocyst into the uterine wall marks the beginning of pregnancy.
胚泡植入子宫壁标志着妊娠的开始。
Human embryos reach the blastocyst stage around five days after fertilization.
人类胚胎在受精后大约五天左右会发育到胚泡阶段。
In vitro fertilization (IVF) often involves the culture of embryos until they form a blastocyst.
体外受精（IVF）通常涉及将胚胎培养至形成胚泡阶段。
Blastocysts contain an inner cell mass that will give rise to the embryo proper and an outer layer of cells called the trophectoderm.
胚泡内含有一团内部细胞群，这将发育成为真正的胚胎以及一个被称为滋养外胚层的外围细胞层。
The grading of blastocysts based on their appearance under a microscope can help predict their likelihood of successful implantation.
在显微镜下对胚泡进行分级可以帮助预测其成功着床的可能性。
Transfer of a single high-quality blastocyst reduces the risk of multiple pregnancies associated with traditional IVF treatments.
移植单个优质胚泡可以降低与传统IVF治疗相关的多胎妊娠风险。
The zona pellucida surrounding the blastocyst must thin and eventually hatch for successful implantation to occur.
包绕胚泡的透明带必须变薄并最终孵化才能成功着床。
Researchers have been able to generate pluripotent stem cells from human blastocysts, which has opened new avenues for regenerative medicine.
研究人员已经能够从人胚泡中生成多能干细胞，为再生医学开辟了新的途径。
The decision to freeze or transfer blastocysts during fertility treatment depends on factors such as the patient's age and embryo quality.
在辅助生殖治疗中决定冷冻还是移植胚泡要取决于患者年龄和胚胎质量等多种因素。