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Genetic Factors Affect the Number of Circulating Primordial Germ Cells in Early Chick Embryos
primordial germ cells circulation chick embryo male female
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2009/7/31
Avian primordial germ cells (PGCs) arise from the epiblast and circulate temporarily via the blood vascular system in their migration route to the gonadal anlage. There are egg-to-egg variations in th...
Changes in the Expression of Major Histocompatibility Complex Class II mRNA in Response to Inoculation with Salmonella enteritidis in Cultured Hen Ovarian Tissue
Salmonella enteritidis MHC-II mRNA ovary follicle hen
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2009/7/31
Salmonellosis caused by Salmonella enteritidis (S. enteritidis) is a worldwide problem in recent years affecting the poultry production as well as public health. The ovarian immunity may play signific...
Effects of Semi-purified Pellet Diet on the Chicken Intestinal Villus Histology
semi-purified diet pellet intestinal villi absorptive epithelial cells histological change
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2009/7/31
To establish the basic histological data on intestinal villi in chickens fed a semi-purified pellet diet, birds were divided into the following groups : intact control (IC), 3-d fasting (F), ad libitu...
Changes in Calcium, Magnesium and Phosphorus Contents of Eggshell during Stay in Oviduct Uterus in the Guineafowl and the Chicken
guineafowl chicken eggshell shell calcium shell magnesium shell phosphorus
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2009/7/31
The amount of calcium, magnesium and phosphorus in the shell portion (shell with shell membrane) of eggs of guineafowl and chicken at various times during the stay in the uterus was measured by an ato...
Culture of Chicken Embryos Obtained from the Anterior Region of the Magnum of the Oviduct after Removing a Thin Layer of Dense Albumen Capsule from the Ovum
chicken embryo culture dense albumen embryo manipulation fertilised ovum
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2009/7/31
Fertilised ova, obtained from the anterior region of the magnum of the oviduct 60-80min after the preceding egg had been laid, were cultured in vitro with dense albumen adjusted to pH 7.0 after removi...
Effects of Soft X-Ray Irradiation to Stage X Blastoderm on Restriction of Proliferation of Primordial Germ Cells in Early Chicken Embryos
chick embryo primordial germ cell soft X-ray stage X blastoderm
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2009/7/30
It is necessary to deplete the endogenous primordial germ cells (PGCs) from recipient embryos when germline chimaeric chickens are produced by the transfer of PGCs. In this study, effects of soft X-ra...
Embryonic Effects of Androgen Active Endocrine Disrupting Chemicals on Avian Immune and Reproductive Systems
androgen active endocrine disrupting chemical avian immune reproduction
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2009/7/30
Endocrine disrupting chemicals (EDCs) are compounds that alter the production, secretion, action, and elimination of endogenous hormones. In the environment, organisms are exposed to many different ty...
Intense Expression of GFP Gene in Gonads of Chicken Embryos by Transfecting Circulating Primordial Germ Cells in vitro and in vivo
gonads green fluorescent protein primordial germ cell transfection
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2009/7/30
The present study was carried out to develop techniques for introducing exogenous DNA into primordial germ cells (PGCs) and expressing the introduced DNA efficiently in the gonads of developing chicke...
Influence of Leucine on Protein Metabolism of Chicken Embryo Myoblasts is Modulated by Varying Serum Concentrations in the Medium
fetal calf serum leucine myoblast protein degradation protein synthesis
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2009/7/30
The influence of varying leucine and fetal calf serum (FCS) concentrations in the culture medium on protein synthesis and degradation of chicken embryo myoblasts was examined. Medium199 contained 0, 1...
Dynamic Analysis of the Developmental Fate of Cells in the Center of the Area Pellucida of the Blastoderm in Chicken
migration PKH26 primordial germ cells vasa
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2009/7/30
The cells in the center of the area pellucida of the blastoderm have been used as donors for production of chimeric chickens, but the developmental fate of the cells has not been analyzed in detail. A...
Profiles of mRNA Expression of FOXL2,P450arom,DMRT1,AMH,P450c17,SF1,ERα and AR,in Relation to Gonadal Sex Differentiation in Duck Embryo
dmrt1 duck gonad foxl2 mRNA P450arom
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2009/7/30
The present study was conducted to show a profile of mRNA expression of sex-differentiation related genes in the duck gonad. Fertile duck eggs (Cherry-valley) were incubated (hatching at day 28 of inc...
Changes in Carnosine and its Related Constituents during Embryonic Development in the Breast Muscle of Layer and Broiler Chickens
anserine carnosine chicken embryo skeletal muscle
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2009/7/29
Developmental changes in the levels of carnosine (β-alanyl-L-histidine), its derivative anserine (β-alanyl-1-methyl-L-histidine), and their constituents including β-alanine, L-histidine and 1-methylhi...
目的］ 研究高原牦牛胎盘粉的抗氧化作用。［方法］ 将健康小鼠随机分为正常对照组、模型组、阳性对照组、低海拔胎盘组、中海拔胎盘组和高海拔胎盘组，将后5组用D半乳糖造亚急性衰老小鼠模型；低海拔胎盘组、中海拔胎盘组和高海拔胎盘组的小鼠在建模11 d 后每天灌胃牦牛胎盘粉40 mg/只、阳性对照组每天灌服维生素E 100 mg/kg，45 d 后观察心、肝、脾、肺、肾组织中超氧化物歧化酶(SOD) 、谷...
单色光对产蛋期蛋鸡脾脏组织结构及脾细胞增殖的影响
单色光 产蛋期蛋鸡 脾脏组织结构 脾细胞增殖
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2009/7/21
应用组织学和免疫组织化学方法研究了单色光对产蛋期蛋鸡脾脏组织结构及脾细胞增殖的影响。结果显示：在白光条件下饲养的蛋鸡，各周龄脾小体直径间差异不显著(P>005)，37周龄脾动脉周围淋巴鞘面积比29周龄减小1334%（P<005）。29周龄和37周龄蓝光组脾小体直径比白光组分别极显著增加2094%和2027%（P<001），29周龄和37周龄蓝光组脾动脉周围淋巴鞘面积比红光组分别极显著增...