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Tag: "material" at biology news

University of Manchester makes made-to-measure skin and bones a reality using inkjet printers

...tures are created by printingvery thin layers of a material repeatedly on top of each other untilthe structure is built. Each layer is just 10 microns thick (1,000layers equals 1cm in thickness).This method allows larger tissues to be grown than previously possible.The reason for this is the way in which the ...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

...mmunity, Spearneeded to collect only about as much material as a pencil eraser.Sediment samples were scooped into special sample vials and immediatelyfrozen in liquid nitrogen canisters to preserve the microbialcommunity.In springs where there was no sediment, Spear collected samples ofplanktonic organisms by...

Priming embryonic stem cells to fulfill their promise

...onicstem cells are considered the blank-slate, raw material needed torepair or replace damaged or missing liver, nerve, muscle, and othertissues and organs. However, in order to fulfill their therapeuticpromise, scientists believe that stem cells must first be coaxed todifferentiate, or mature, into precursor...

UCLA Study Shows One-Third of Drug Ads in Medical Journals Do Not Contain References Supporting Medical Claims

...ims; while the majority of references to published material was available, only a minority of company data-on-file documents were provided upon request; and the majority of original research cited in the ads was funded by or had authors affiliated with the product's manufacturer. In one of the largest studie...

Scientists Replicate Hepatitis C Virus in Laboratory

... that it contained only nucleic acids, the genetic material of the virus, and did not have the HCV viral envelope, a protective shell of lipids and proteins that surrounds the viral RNA in fully-formed HCV. The naked HCV construct was then placed into human liver cells in a cell culture medium. The NIDDK sci...

Dinosaur DNA? New Patent Covers Degraded DNA recovery

...terial. That process is repeated until the genetic material is substantially representative -- at microscopic levels -- of the species from which the degraded sample was obtained. Dr. Ensley and his team hope to apply this new technology to products they will make available later this year. "We don't plan to...

Molecular machine may lead to new drugs to combat human diseases

...a molecular machine that can cut and paste genetic material is revealing possible new paths for treating diseases such as some forms of cancer and opportunistic infections that plague HIV patients. Purdue University researchers froze one of these molecular machines, which are chemical complexes known as a Gr...

Solution to Pollution: New Bacteria Eats Toxic Waste

...stems funded the biologists to examine the genetic material for the five isolates. They answered questions abo...The Department of Energy will sequence the genetic material of the microbes, and the researchers will then participate in the annotation process by which genes ...

Enzyme shown to help protect genomic stability

...tection against unwanted recombinations of genetic material or other disruptions of the genome's integrity. Genomic instability, particularly in the regions at the ends of the chromosomes known as telomeres, has been linked to aging in humans and an elevated risk for aging-related diseases, the most prominen...

Purdue proves concept of using nano-materials for drug discovery

...olds thousands of tiny vessels sitting on top of a material that contains numerous pores. This "nanoporous" material makes it possible to carry out reactions inside the vessels. The goal is to produce "laboratories-o...

Scientists rid stem cell culture of key animal cells

...ide from feeder cells, two other sources of animal material remain in stem cell culture materials. One, Matrig...nt, which is bovine in origin, is the other animal material still needed to culture stem cells. Xu became interested in unveiling molecules derived from the mo...

Essential mangrove forest threatened by cryptic ecological degradation

...anka, changing water runoff patterns, and archival material from the Dutch East-India company, the researchers show that over the past few decades contemporary irrigation projects have abused the long-standing Sri Lankan tradition of freshwater management that once sustained robust irrigation-based civilizati...

UCSD researchers maintain stem cells without contaminated animal feeder layers

...uman embryos are grown and nourished in petri dish material called feeder layers that are made with animal connective tissue, primarily mouse and calf. A recent study in Nature Medicine** by UCSD's Ajit Varki, M.D. showed that human embryonic stem cells grown in this animal-derived tissue become contaminated ...

Open microfluidic and nanofluidic systems

...sses the strong capillary forces between substrate material and liquid and takes the ‘freedomâ€TM of contact... width; and (ii) the interaction between substrate material and liquid. One has to distinguish seven different liquid morphologies which involve localized dropl...

Development of portable infectious disease detector

...method for molding micro-channelsand valves into a material similar to that used in soft contact lenses.This has given them the capability to capture, manipulate, grow andstudy single living cells in extraordinarily small containers--volumesthat are barely larger than the cells themselves.Most sensors that ha...

Nano-Probes Allow an Inside Look at Cell Nuclei

... size, they can be used to observe the transfer of material between cells. "We can have two different quantum dots in two different cells, and watch as the cells exchange their mitochondria," says Chen, adding that their technique paves the way for imaging a host of other long-term biological events. "The to...

NC State scientist finds soft tissue in T. rex bones

...ocks" through a gradual replacement of all organic material by minerals. New research by a North Carolina Stat...e removal process left behind stretchy bone matrix material that, when examined microscopically, seemed to show blood vessels, osteocytes, or bone building cell...

Molecular Motors Cooperate In Moving Cellular Cargo, Study Shows

...he tiny movements of molecular motors that shuttle material within living cells. The motors cooperate in a del...o from one part of a cell to another. Dynein moves material from the cell membrane to the nucleus; kinesin moves material from the cell nucleus to the cell memb...

Key mechanism in genetic inheritance during cell division identified

A key mechanism in the passing of genetic material from a parent cell to daughter cells appears to have been identified by a team of Berkeley researchers. Their study may explain how a complex of proteins, called kinetochores, can recognize and stay attached to microtubules, hollow fibers in the wall...

Anti cancer virotherapy well tolerated in first human administration, research finds

...mation" as a result of the injections of the viral material and basic blood chemistry and liver enzyme levels ...ntroduction into the body of the appropriate viral material which then reproduces at a rapid rate over a short period of time, devouring the cancer cells in the...

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