Results 201 to 210 of about 26,437 (250)
[Maternal MTR gene polymorphisms and their interactions with periconceptional folic acid supplementation in relation to offspring ventricular septal defects]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiRuan XR +7 more
europepmc +1 more source
[Gene polymorphism in oral lichen planus]. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2020 Pan YX, Guo DW, Li X, Liu HY, Lu SL.
europepmc +1 more source
野生动物学报自然界中的许多动物，尤其是两栖类，为了避免被捕食和提高生存概率，演化出了多种多样的颜色和/或图案。为了更深入地了解高山倭蛙（Nanorana parkeri）的体色和外观多样性，在西藏自治区当雄县羊八井镇一静水湿地中（29°58′53″ N，90°22′21″ E；海拔4 384 m）采集了345只成体高山倭蛙。根据3个可清晰辨别的特征：背底色（黄色和灰色），背中线（缺失、宽或窄），背部黑斑（存在、缺失和极少），可识别出此区域的高山倭蛙存在8种色斑形态。灰色个体比黄色个体更常见（频率分别为57.98 ...
崔张波 +7 more
doaj
Zhongshan Daxue xuebao. Yixue kexue ban, 1994 从２０例人类白细胞抗原－ＤＲ（ＨＬＡ－ＤＲ）血清学特异性不同的血痕样本中抽提基因组ＤＮＡ，经ＰＣＲ扩增ＨＬＡ－ＤＲＢ基因第二外显子的高度多态区域。ＰＣＲ产物在５０％甲酰胺存在下加性获得单链ＤＮＡ片段后，经８％中性聚丙用酰胺凝胶电泳、银染显色分析。结果显示，ＤＲ血清学特异性不同的个体具有不同的电泳图型。而ＤＲ相同血清不同的个体却具有相同的电泳带型。在稳定条件下，单链电泳图型有着良好的重复性。与聚合酶链反应－制性片段长度多态性（ＰＣＲ－ＲＦＬＰ）或聚合酶链反应－序列特异寡核苷酸（ＰＣＲ－ＳＳＯ）探针法相比 ...
doaj
[－75 G/A Polymorphism of Apolipoprotein A1 Gene Promoter Region in Normal Pregnant Women and Patients With Gestational Diabetes Mellitus]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanLi R +11 more
europepmc +1 more source
[Single nucleotide polymorphism heritability of non-syndromic cleft lip with or without cleft palate in Chinese population]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanXue E +14 more
europepmc +1 more source