thick membrane around the mammalian ovum; can be penetrated by one sperm in the fertilization process; usually remains around the fertilized egg until it is implanted in the wall of the uterus

objective to construct the recombinant plasmid that highly expressed human zona pellucida 3. methods the techniques of pcr amplification, t-a vector ligation, and sub-clone were used.

目的：构建高效表达人透明带蛋白3的真核重组表达载体。方法：利用pcr、t-a载体克隆和亚克隆等技术。

by integrating the technology of ivf and micro operation. microfertilization can eliminate the barrier of physiologic fertilization resulting from the zona pellucida and egg cytoplasm.

显微受精技术是体外受精与显微操作技术相结合的一项胚胎工程技术，使得由透明带和卵质膜所形成的生理受精障碍得以排除。

the total thickness was only half of the zona pellucida before fertilization.

其总厚度约比受精前减少一半。

objective: to study the reliability of the new enucleation method for mouse oocyte: zona pellucida dilating (zpd) assisted enucleation method.

目的探讨新的小鼠卵母细胞透明带膨胀（zpd）辅助去核法的可靠性。

the paper reviews the constitution, molecular structure, biological function and application of zona pellucida in male fertilization.

本文就透明带的组成、分子结构、生物学功能及其在男性生育领域的应用进行综述。

objective to construct the recombinant plasmid that highly expressed human zona pellucida 3.

目的：构建高效表达人透明带蛋白3的真核重组表达载体。

objective to explore the relationship between anti zona pellucida antibody and the levels of hormone.

目的探讨血清抗透明带抗体 （azpab）与激素水平之间的关系。

these data indicated that the effect of antisera to the zona pellucida would mainly block fertilization and interfere early embryo development, but exists individual differences.

提示人抗卵透明带抗体的主要效应是阻断受精，并可以进一步抑制胚胎早期发育，但效应的程度表现出个体差异。

the sperm has fused to the egg cell membrane (oolemma) prior to becoming incorporated almost completely into the egg. the zona pellucida has been removed in this preparation.

精子通过卵细胞膜进入卵细胞在里面进行结合，在这种图像中透明膜被移调了。

assisted hatching (ah) is a micromanipulation procedure in which a hole is made in the zona pellucida just prior to embryo transfer to facilitate hatching of the embryo.

辅助孵化（ah）是个精密控制的程序。胚胎移植前在透明带打孔以促使胚胎孵化。

to investigate the effects of freezing and thawing procedure on human embryos survival rate and development after zona pellucida micromanipulation.

探讨慢速程序冷冻对透明带显微操作后胚胎冻存率及继续发育的影响。

zona pellucida protein surrounding to oocyte is important in the proc ess of fertilization.

卵透明带蛋白围绕在卵母细胞外，在受精过程中起着重要作用。