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New method tracking changes in blood vessels could advance brain disease detection（图）
血管变化 脑部疾病 成像技术 神经退行性疾病
2023/5/25
A new imaging technique opens a path toward long-term study of blood vessels in aging brains and could help predict neurodegenerative diseases decades before symptoms begin.
In recent years, scientists who study gene expression in cells have used a method that essentially pins a tail on RNA and tracks their whereabouts. However, certain types of RNA evade the process. Now...
New method opens the door to efficient genome writing in bacteria
bacterial cell editing bacterial genomes microbiome DNA sequencing ssDNA
2021/8/5
Biological engineers have devised a way to program memories into bacterial cells by rewriting their DNA. The new DNA writing technique, which the researchers call HiSCRIBE, is much more efficient than...
New method for tapping vast plant pharmacopeia to make more effective drugs
New method plant pharmacopeia more effective drugs
2017/4/14
These are just three familiar examples of the hundreds of thousands of small molecules (also called specialized or secondary metabolites) that plants use as chemical ammunition to protect themselves f...
Researchers at Stanford create new method for recording bird flight in 3D
Researchers Stanford recording bird flight 3D
2017/4/10
The wind rushing between skyscrapers is a substantial hurdle for anyone interested in operating small drones in urban areas. Yet, pigeons seem to have little trouble maneuvering through turbulent city...
New method reveals high similarity between gorilla and human Y chromosome
high similarity gorilla human Y chromosome
2016/3/2
A new, less expensive, and faster method now has been developed and used to determine the DNA sequence of the male-specific Y chromosome in the gorilla. The technique will allow better access to genet...
The Argentine ant is an invasive species that has become a major nuisance in California and southern states, including Georgia, South Carolina. Alabama, Mississippi, Louisiana, Florida, Tennessee and ...
Team Develops ‘Cool’ New Method for Probing How Molecules Fold
Cool New Method Molecules Fold
2014/12/18
Using the new system, researchers can force a sample of molecules to unfold and refold by boosting and then dropping the temperature, so quickly that even some of the fastest molecular folding events ...
New method helps map species' genetic heritage
New method helps map species genetic heritage
2014/12/11
These questions seem simple, but are actually difficult for geneticists to answer. A new, sophisticated statistical technique developed by researchers at the University of Illinois and the University ...
Cold Spring Harbor, NY – With three billion letters in the human genome, it seems hard to believe that adding a DNA base here or removing a DNA base there could have much of an effect on our health. I...
一种早期胚胎体外培养新方法的建立Establishment of a New Method for Early Embryo Culture in vitro
体外培养 套皿法 早期胚胎
2008/1/8
摘要
建立一种不依赖于液体石蜡的早期胚胎体外培养方法——套皿法，并比较了4种不同处理方法体外培养胚胎的效果。结果显示，采用套皿法进行胚胎培养，盖液体石蜡和不盖液体石蜡皿中的胚胎在各阶段的发育率差异不显著。与套皿法相比，用单皿微滴覆盖法(Brinster法)培养的胚胎在各阶段的发育率显著降低。不覆盖液体石蜡单皿中的胚胎则阻断于二细胞阶段。本实验设计的套皿法是一种有效的早期胚胎体外培养方法，为早期...