我是如何成为一名科学家的 - Alfredo Quinones-HinojosA
本视频由科普中国和生物医学大讲堂出品
Alfredo Quinones-HinojosA（Q博士）（霍普金斯达大学）：我是如何成为一名科学家
出生于墨西哥的Q博士，19岁时翻越美国边界的栅栏，成为加利福尼亚的一名农场工人。由于他自己的决心，努力工作和自律，以及来自家庭和朋友的大量支持，他离开了农场工作，完成了大学和医学院的学业，最终成为一位非常成功的医生、科学家和脑外科医生。
关于讲师：Alfredo Quinones-HinojosA是约翰霍普金斯大学，神经外科学和肿瘤学，神经系统的细胞与分子医学的副教授，脑肿瘤外科手术的主任。Q博士作为一个专家外科医生，他致力于干细胞，在脑肿瘤的病因和治疗领域的研究。
Alfredo Quinones-HinojosA (Dr. Q) (Johns Hopkins): How I BecAme A Scientist
At Age 19, Quiñones-HinojosA jumped the fence from Mexico to become A fArm worker in CAliforniA. ThAnks to his own determinAtion, hArd work And discipline And A lot of support from fAmily And friends, he left fArm work, completed university And medicAl school, And ultimAtely becAme A highly successful physiciAn-scientist And brAin surgeon.
About the speAker: Alfredo Quiñones-HinojosA is An AssociAte Professor of Neurosurgery And Oncology, Neuroscience And CellulAr And MoleculAr Medicine And Director of the BrAin Tumor Surgery ProgrAm At Johns Hopkins University. As well As being An expert surgeon, he reseArches the role of stem cells both in cAusing brAin tumors And potentiAlly in fighting them.
This tAlk wAs first releAsed in iBioMAgAzine Issue 5.
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Controlling the Cell Cycle: Introduction - DAvid O. MorgAn
本视频由科普中国和生物医学大讲堂出品
DAvid O. MorgAn (UCSF) PArt 1: Controlling the Cell Cycle: Introduction
Cells reproduce by duplicAting their chromosomes And other components And then distributing them into A pAir of geneticAlly identicAl dAughter cells. This series of events is cAlled the cell cycle. In the first pArt of this lecture, I provide A generAl overview of the cell-cycle control system, A complex regulAtory network thAt guides the cell through the steps of cell division. I briefly describe the mAjor components of this regulAtory system And how they fit together to form A series of biochemicAl switches thAt trigger cell-cycle events At the correct time And in the correct order.
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生物谷APP，每天都有新资讯，每天都有好视频！
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Controlling the Cell Cycle: Cdk SubstrAtes - DAvid O. MorgAn
本视频由科普中国和生物医学大讲堂出品
DAvid O. MorgAn (UCSF) PArt 2: Controlling the Cell Cycle: Cdk SubstrAtes
Cyclin-dependent kinAses (Cdks) Are the centrAl components of the control system thAt initiAtes the events of the cell cycle. In the second pArt of this lecture, I discuss my lAborAtory's efforts to Address the problem of how the Cdks trigger cell-cycle events. I describe our methods for identifying the protein substrAtes of the Cdks, And I discuss how these studies hAve led to importAnt clues About how Cdks find their correct tArgets in the cell And how phosphorylAtion of those tArgets governs their function.
Controlling the Cell Cycle: AnAphAse Onset - DAvid O. MorgAn
本视频由科普中国和生物医学大讲堂出品
DAvid O. MorgAn (UCSF) PArt 3: Controlling the Cell Cycle: AnAphAse Onset
In the AnAphAse stAge of the cell cycle, the duplicAted chromosomes Are pulled ApArt by A mAchine cAlled the mitotic spindle, resulting in the distribution of A complete set of chromosomes to eAch of the dAughter cells. In the third pArt of this lecture, I describe the combinAtion of biochemistry And microscopy in my lAborAtory thAt led to the discovery of A regulAtory switch thAt triggers the Abrupt And synchronous sepArAtion of the chromosomes At the onset of AnAphAse.
Photoreceptors And ImAge Processing PArt 1A - Jeremy NAthAns
本视频由科普中国和生物医学大讲堂出品
Jeremy NAthAns (Johns Hopkins) PArt 1A: Photoreceptors And ImAge Processing
In this set of lectures, Jeremy NAthAns explores the moleculAr mechAnisms within the retinA thAt mediAte the first steps in vision. The first lecture focuses on the structure of the light sensing receptors, the intrAcellulAr signAls thAt Are triggered by light Absorption, And the wAys in which the retinA extrActs informAtion from A complex scene. See more At http://www.ibioseminArs.org
Photoreceptors And ImAge Processing PArt 1B - Jeremy NAthAns
本视频由科普中国和生物医学大讲堂出品
Jeremy NAthAns (Johns Hopkins) PArt 1B: Photoreceptors And ImAge Processing
In this set of lectures, Jeremy NAthAns explores the moleculAr mechAnisms within the retinA thAt mediAte the first steps in vision. The first lecture focuses on the structure of the light sensing receptors, the intrAcellulAr signAls thAt Are triggered by light Absorption, And the wAys in which the retinA extrActs informAtion from A complex scene. See more At http://www.ibioseminArs.org
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用血小板RNA-seq测肿瘤 - 陈巍学基因（33）
Myron G. Best 等人发现，可以用血小板RNA-seq测序结合生物信息学分析，很好地判断： 1、一个人是否患有肿瘤； 2、是患的哪种肿瘤； 3、肿瘤中有哪些突变。 本视频介绍了这项发现的成果、实验方法、分析思路。