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ISBN: (纸本)7538140514

关键词： Daucus carota   somatic embryogenesis   suspension culture  

摘要： A simple procedure was established to maintain the rate of somatic embryogenesis in carrot cell strains. Secondary cell strains were induced by the disorganization of heart-shaped somatic embryos by transferring them into a medium containing 2,4-dichlorophenoxyacetic acid and the rate of somatic embryogenesis was restored to the original level. It was possible to keep the original rate of embryogenesis by repeated induction and disorganization of somatic embryos, as the restored rate of embryogenesis decreased gradually during subcultures. In the carrot cell suspension culture used in this work, it was possible to keep high rates of somatic embryogenesis for at least 3 years by using this method at every 50th subculture. The method presented here should be useful to maintain regeneration competence in certain important cell strains.

关键词： 人体组织学：人体胚胎学   成人教育：高等教育   教材  

ISBN: (纸本)7801578171

摘要： 全国医学成人高等教育专科教材:本书内容包括组织学的研究内容和意义，细胞，上皮组织，结缔组织，肌组织，神经组织，循环系统，免疫系统，胚胎学绪论，畸形学概述等。

关键词： alkaline phosphatase   endoderm differentiation   gut   primary mesenchyme cell   sea urchin  

摘要： Primary mesenchyme cells (PMC), the skeletogenic cells derived from the micromeres of the sea urchin embryo, are involved in the differentiation of the gut. When PMC were deleted from the mesenchyme blastula, both formation of the constrictions in the gut and expression of endoderm-specific alkaline phosphatase were significantly delayed. Therefore, the correct timing of gut differentiation depends on the existence of PMC, probably via a type of promotive signal. To date, the only role of PMC in other tissue differentiation has been a suppressive signal for the conversion of secondary mesenchyme cells (SMC) into skeletogenic cells. The present experiments using PMC ablation and transplantation showed that both signaling processes occurred in the same short period during gastrulation, but the embryos kept their competence for gut differentiation until a later stage. Further investigations indicated that conversion of SMC did not cause delay in gut differentiation and that SMC did not mediate the PMC signal to the endoderm. Therefore, the effect of PMC on gut differentiation could be a new role that is independent of the suppressive effect for SMC conversion.

关键词： 《人体解剖学与组织胚胎学》   教材分析   学习方法   学习指导   高等教育自学考试  

ISBN: (纸本)7810714627

关键词： 组织胚胎学   计算机辅助教学   教学质量   医学教育   教学改革  

摘要： 本文通过组织胚胎学计算机辅助教学课件的制作及应用,以及学生的反馈意见,说明了该方法对促进医学教育改革,更新教学模式,提高教学质量具有重要意义.

关键词： 胚胎移植技术   技术人才   胚胎移植产业化   人才培训  

关键词： 组织胚胎学   理论课   授课方法   医学教育  

摘要： 组织胚胎学是一门较古老的形态学科,是研究人体微细结构及其相关功能的科学.以往学生学起来感到结构名称多、枯燥乏味、难学,与临床联系不密切.其实这是一种误解.组织胚胎学是比较重要的一门基础医学课程,它已处于现代生命科学的交叉网络中,一方面与生物化学、免疫学、病理学、内分泌、生殖学及优生学等相关学科相互交叉渗透;另一方面又与现代医学,如细胞突变与癌变及其逆转,细胞与组织的衰老等重大课题密切相关.针对学员厌学的这种心态,笔者在讲课时,努力做到跟踪最新研究进展,使学员认识到当今组织胚胎学专业发展迅猛,引导学生变被动为主动,变消极为积极.具体措施如下.

关键词： 多媒体教案   组织胚胎学   教学实践   课堂教学  

摘要： 组织胚胎学是一门重要的医学基础课,是一门形态学科,其知识具有平面和立体、静态和动态、局部和整体相结合及结构细微的特点.在传统的教学中,常常表现为缺乏立体感和动态观察,如何在教学过程中使学生正确地观察、理解和记忆所学的组织学结构与胚胎发育过程,是组胚教学中长期探索的问题.随着计算机多媒体技术在医学计算机辅助教学(CAJ)的应用,尤其是形态学科图像信息方面的应用,使得上述问题得到很好的解决,具有传统的教学工具挂图所无法比拟的优越性,将CAJ引入教师备课,特别是理论课和实习课的教案的编写,可以明显地提高教学质量.