结论亚甲基四氢叶酸还原酶基因C677T基因多态性可能是我国大肠癌的遗传易感因素。
Conclusion These findings demonstrated that the genetic variation of MTHFR C677T should be a genetic susceptibility factor for colorectal cancer in a Chinese population.
该文就近年来亚甲基四氢叶酸还原酶基因多态性与高危妊娠和胎儿畸形关系做一简要综述。
In this review, we summarized researches on the correlation between methylenetetrahydroflate reductase gene polymorphism, high-risk pregnancy and congenital anomalies.
目的探讨北方乡村妇女亚甲基四氢叶酸还原酶（MTHFR）基因多态性与神经管畸形的关系。
Objective To explore relationship between methylenetetra hydrofolate reductase (MTHFR) polymorphism and neural tube defects (NTDs)of women in the northern countryside.
亚甲基四氢叶酸还原酶基因突变导致的遗传多态现象可增加神经管缺陷(ntd)发生的危险性。
The genetic polymorphisms due to mutations in the methylene tetrahydrofolate reductase gene may increase the risk for NTDs.
目的建立一种简便、实用的检测亚甲基四氢叶酸还原酶(MTHFR)等位基因C677 T点突变的方法，并初步观察部分健康老人和老年血管性痴呆(VD)患者中mthfr等位基因C677 T点突变情况。
Objective to establish a simple and practical method for detecting the MTHFR gene C677T mutation so as to investigate MTHFR genotypes in the healthy elder and Vascular Dementia (VD).
聚四亚甲基醚二醇(PTMEG)是生产氨纶和聚氨酯弹性体的重要原料之一。
Polytetramethylene ether glycol (PTMEG) is one of important materials for production of spandex and thermoplastic polyurethanes elastomer (PU).
计算聚亚甲基链的末端距四次矩，并同二级相互作用的结果进行了比较。
In this paper, fourth moment of end-to-end distance of polymethylene chains in the third-order interaction approximation is calculated.
取以杂多酸为催化剂，一步法合成聚四亚甲基醚醇(PTMG)，对影响聚四亚甲基醚醇单程收率的各因素进行了讨论。
Polyoxytertramethylene (PTMG) is synthetized in one step using heteropoly acid as catalyst. We discussed the factors which influenced the yield of PTMG.
取以杂多酸为催化剂，一步法合成聚四亚甲基醚醇(PTMG)，对影响聚四亚甲基醚醇单程收率的各因素进行了讨论。
Polyoxytertramethylene (PTMG) is synthetized in one step using heteropoly acid as catalyst. We discussed the factors which influenced the yield of PTMG.
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