体核 nucleus 海樽及纽鳃樽类咽头（鳃囊）后方腹面的有色组织群，是由食道、胃、肠结合一起所成的块状体。
组蛋白 H3 与 H2A，H2B，H4 共同构成了真核生物核小体的八聚体核心。
Histone H3 along with H2A, H2B, and H4 form the eukaryotic nucleosome octamer core.
结论连续环形撕囊和乳化晶状体核是乳化手术的关键。
Conclusion Continuous circular capsulorhexis and emulsification of lens nucleus are critical to this surgery.
晶状体核硬化混浊还受环境、饮食及代谢等多种因素影响。
The nuclear sclerosis and opacities are also associated with environment, diet, metabolism and many other factors.
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