spheres

Tiny radioactive spheres effectively treat cancer that has spread to the liver

JACKSONVILLE, Fla. − Placing tiny radioactive spheres directly into the liver through its blood supply halted growth of tumors that had spread to the organ in 71 percent of patients tested in a small clinical trial, researchers from Mayo Clinic Jacksonville report. They say that the techn...

Synthetic biology -- opportunities and risks

...sed by the Executive Committees of the three organisations and defines five spheres of activity to outline how Germany can best profit from the potential offered by synthetic biology. These five spheres of activity are: the strengthening of basic research the bundling of ...

Scientists Test New Way to Get Drugs to Cancer Cells

...ry cancer-killing radioisotopes directly to tumors show promise, U.S. researchers report. The nanoparticles are made with liposomes, small chemical spheres made of fatty molecules that can be designed to carry a number of drugs and chemicals, and can be manipulated to control how long they remain in the b...

Cancer stem cells generated by cancer outgrowth

...s have discovered that growing mouse skin cells in spheres can lead to generation of cells with properties of...like structures, led to an outgrowth of cells into spheres that triggered generation of cells similar to canc... that the cancer stem-like cells isolated from the spheres with disrupted RB1 genes formed tumors when inject...

Eye Cells Believed to Be Retinal Stem Cells Are Misidentified

...nal stem cells because when grown in culture dishes these cells formed tiny spheres of about a thousand cells, said Dyer, the paper's senior author. These sphe...ally retinal stem cells. Painstaking microscopy studies of each cell in the spheres revealed all were pigmented and had features of ciliary epithelial cells. T...

Tea tree oil and silver together make more effective antiseptics

... In the fight against infected skin wounds, mixing tea tree oil and silver or putting them in liposomes, (small spheres made from natural lipids), greatly increases their antimicrobial activity and may minimise any side effects. Wan Li Low and colleagues from the Uni...

Gold Nanospheres Show Promise in 'Boiling' Out Cancer

...structures such as nanorods were like chopsticks on the nanoscale," Zhang said. "They can go through the cell membrane but only at certain angles. Our spheres allow a smoother, more efficient flow through the membranes." Despite the initial success, Zhang said more extensive trails -- eventually involvi...

Targeted nanospheres find, penetrate, then fuel burning of melanoma

...ow and tunable ability to absorb light across the visible and near-infrared spectrum, making them unique from other metal nanoparticles. The hollow spheres are pure gold, which has a long history of safe medical use with few side-effects, Li said. ...

Engineered virus targets and kills apparent cancer stem cells in neuroblastoma

...he cells also carried known biological markers for nerve stem cells, such as the proteins CD133 and nestin. The cells advanced into tumor-like cell spheres and were tumorigenic, meaning they had the potential to form tumors. Cells derived from these tumorspheres were relatively resistant to the chemothera...

Tiny capsules deliver

...ng less than 5 microns or the diameter of the smallest pollen grains. The spheres are formed around solid microparticles that are either the drug to be deliv...tions will be inserted in the microcapsules as needed. To ensure that the spheres refill, the researchers used a solution containing fluorescent dyes. The fi...

spheres in Medical Technology

Derma Sciences' MEDIHONEY(TM) Proven to Speed Healing in Stalled Leg Ulcers

...s an international, peer reviewed, scientific journal that seeks to promote the development and exchange of knowledge that is directly relevant to all spheres of nursing practice. The primary aim is to promote a high standard of clinically related scholarship which supports the practice and discipline of nur...

Researchers Use Magnetism to Target Cells to Animal Arteries

...ology at The Children's Hospital of Philadelphia, loaded endothelial cells, flat cells that line the inside of blood vessels, with nanoparticles, tiny spheres nanometers in diameter. The nanoparticles contained iron oxide. Using an external, uniform magnetic field, Levy's team directed the cells into ste...

spheres in Medical Products

John Weiss, Eye Spheres

Description: John weiss, wright acrylic globe....
Company:OPSM Pty Ltd.

MEDPOR PLUS Sphere

Description:... spheres for Enucleation and Evisceration. The new MEDPOR PLUS spheres combine the structure of standard MEDPOR spheres with a bioactive glass (Bioglass) mixture. The Bio...
Company:Porex Surgical Products Group

Cortical Mapping Unit

Description:...ing post, one ground wire, sixteen sterile, disposable stainless steel, ball-tip electrode rods on flexible spring shafts, sixteen sterile, disposable spheres and one sterilization tray. All reusable components are non-sterile; sterilize via EtO (EO)....
Company:Ad-Tech Medical

Carter Sphere Introducer and Holder

Description:... Designed to insert eye spheres using spring loaded plunger. Polished finish. Overall length: 125 mm, 4.9 inches....
Company:Bausch & Lomb Storz

Cerasorb

Features:...ermeable matrix, encouraging rapid bone remodeling throughout. Creates a network of large, smoothly interconnected pores, maximizing permeability. The spheres resist crushing, so the permeability is there to stay even after packing. Cerasorb's benign resorption is due to its extremely high purity greater tha...
Company:Abbott Spine

spheres in Medical Dictionary

Bacterial

...bacteria are a large group of unicellular microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals. Bacteria are ubiquitous in every habitat on... Infective endocarditis is a form of endocarditis caused by infectious agen...

spheres in Biological News

Fatty spheres loaded with siRNA shrink ovarian cancer tumors in preclinical trial

A molecular "off" switch packaged in a tiny sphere penetrates deeply into ovarian cancer tumor cells, stifling a troublesome protein and drastically reducing the size of tumors, researchers at The University of Texas M. D. Anderson Cancer Center report in the Aug. 15 edition of Clinical Cancer Rese...

New windows opened on cell-to-cell interactions

...hin layer of membrane lipids -- onto to tiny glass spheres about one-millionth of a meter in diameter to clos... the biomembrane, the identical negatively charged spheres repelled each other. With the membrane attached, c...s changed dramatically. Suddenly, the like-charged spheres were attracted to each other. "This was weird,"...

Shape matters in the case of cobalt nanoparticles

...ng on a previous paper** that examined the properties of cobalt formed into spheres just a few nanometers in diameter, the new work explores what happens when ... is surprising because the cubes average 50 nm across, much larger than the spheres 10 nm diameters. You might expect the smaller objects to have a lower melti...

NIST-Cornell team builds world's first nanofluidic device with complex 3-D surfaces

... two different solutions: one containing 100-nanometer-diameter polystyrene spheres and the other containing 20-micrometer (millionth of a meter)-length DNA mo...etically driven across the device from deeper to shallower levels. Both the spheres and DNA strands were tagged with fluorescent dye so that their movements co...

Eye cells believed to be retinal stem cells are misidentified

...nal stem cells because when grown in culture dishes these cells formed tiny spheres of about a thousand cells, said Dyer, the paper's senior author. These sphe...ally retinal stem cells. Painstaking microscopy studies of each cell in the spheres revealed all were pigmented and had features of ciliary epithelial cells. T...

How Volvox got its groove

...lular, while others live in colonies of up to 50,000 cells. Many of the colonial algae species are visible to the eye and appear to be little green spheres rolling through the water. The most complex species have a division of labor -- some cells do the swimming, others do the reproducing. Although an...

Nanoparticle toxicity doesn't get wacky at the smallest sizes

...0 times smaller than the width of a human hair. They are being used in tires, biomedical research, and cosmetics. Researchers are exploring these tiny spheres because their physical and chemical properties at that size offer advantages that standard materials don't, such as being able to float through blood ...

Biomedical researchers create artificial human bone marrow in a test tube

...scaffolds, scientists molded the polymer with tiny spheres ordered like billiard balls. Then, they dissolved the spheres to leave the perfect geometry of pores in the scaf...he geometrical perfection of the polymer molded by spheres is very essential for reproducibility of the drug ...

New polymer coatings prevent corrosion, even when scratched

...n in the journal Advanced Materials , and posted on its Web site. To make self-repairing coatings, the researchers first encapsulate a catalyst into spheres less than 100 microns in diameter (a micron is 1 millionth of a meter). They also encapsulate a healing agent into similarly sized microcapsules. The ...

Ship-in-a-bottle kit on a microchip

... To do this, they introduce colloidal particles - tiny magnetizable plastic spheres - as components into the channels on the chip. A rotating magnetic field is...o drive the tiny machines. They introduce colloidal particles, tiny plastic spheres with a diameter of just about five micrometers, into the channels and cavit...

spheres in Biological Technology

Bristly spheres as capsules

This release is available in German . Amphiphilic molecules, which have one water-friendly (hydrophilic) end and one water-repellant (hydrophobic) end, spontaneously aggregate in aqueous solutions to make superstructures like capsules or bilayers. This phenomenon is responsible for the e...

FasterCures Rewards Two InnoCentive Solvers for Innovative Ideas to Accelerate Medical Research

... proposals and discussing them with other medical research stakeholders. One solution sought to apply a successful process that had been used in other spheres and another carefully addresses some of the challenges of existing public-private partnerships to foster biomarker research. We enjoyed the exercise a...

SMU chemist wins NSF early career award

...One of the potential applications of the technology is an automatic treatment solution for diabetics one that would release insulin from tiny polymer spheres when they encounter dangerous levels of glucose in the bloodstream. "Researchers worldwide are looking toward methods of insulin delivery that will...

Gold nanostar shape of the future

... DURHAM, N.C. Rods, cones, cubes and spheres move aside. Tiny gold stars, smaller than a billionth of a meter, may hold the promise for new approaches to medical diagnoses or testing for environ...

Researchers show how to 'stamp' nanodevices with rubber molds

...fabricated electrodes, and through them to other circuitry. In addition to metal nanoparticles, the process could be applied to quantum dots, magnetic spheres and other nanoparticles, they said. They also assembled arrays of single salt crystals, suggesting that any material capable of crystallization could ...

Engineering nanoparticles for maximum strength

...ts. The chemical methods used to create the hollow spheres allow their dimensions to be manipulated with great precision, including the outer diameter of the spheres and the thickness of the shells. "Essentially...y bore down on the hollow nanospheres was that the spheres gradually bulged at the sides as they were squashe...

Purifying nanorods: Big success with tiny cleanup

..., electricity and magnetic fields differently than spheres or discs containing the same number of atoms. T...uces gold nanoparticles of other shapes, including spheres and flattened sheets called platelets. Researchers...adually sink to the bottom of the mixture, and the spheres were siphoned away. While conducting research o...

Old and new therapies combine to tackle atherosclerosis

... were obtained in tests on rabbits, they raise hope that a similar approach could help human patients with atherosclerosis. The nanoparticles minute spheres about 20,000 times smaller than the diameter of a straight pin were coated with a substance that made them stick in growing blood vessels and with fu...

Forward step in forecasting global warming

... relate to climatic warming and cooling. The research findings are detailed in the Aug. 8 issue of Science magazine, in the article "Brown Carbon spheres in East Asian Outflow and Their Optical Properties," co-authored by Crozier, Anderson and Duncan Alexander, a former postdoctoral fellow at ASU in the...

How buckyballs hurt cells

... carbon-60 molecules form naturally in minute quantities under extreme conditions such as lightning strikes. They can also be produced artificially as spheres or oblong-shaped balls, known as fullerenes, and can be used to produce hollow fibers known as carbon nanotubes. Both substances are considered to be ...

spheres in Biological Products

BlockAid blocking solution *for use with microspheres* from Molecular Probes (Invitrogen)

Description:...ing nonspecific binding by dyelabeled antibodies. In our tests, the protein-based BlockAid blocking solution was mixed with streptavidin-labeled Fluo- spheres microspheres, which were then used to stain several different cell types for flow cytometry. We found that BlockAid blocking solution was superior to ...
Company:Molecular Probes (Invitrogen)

spheres in Biological Definition

Lipid

...placed in a polar milieu, while lipid bilayers form when two-tailed phospholipids are placed in a polar environment (Fig. 2). Micelles are "monolayer" spheres and can only reach a certain size, whereas bilayers can be considerably larger. They can also form tubules. Bilayers that fold back upon themselves fo...

Rudolf Steiner

...gs and lectures he held that there were three main spheres of power comprising human society : the cultural,... emergence of classical Greece and Rome, the three spheres began to become more autonomous. This autonomy we...he cultural sphere from the political and economic spheres meant education should be available to all childre...

spheres in Biological Dictionary

Bacteria

...cteria are a large group of unicellular microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals.... bacteria ( bak′tirēə ) ( microbiology ) Extremely small, relatively simple prokaryotic microorganisms traditionally cla...

Bacilli

... antigens (O and H) that stimulate the host to form ... Introduction· Actinomycosis· Anthrax· Bejel, Yaws, and Pinta· Campylobacter ... shapes: spheres (cocci), rods ( bacilli ), and spirals or helixes (spirochetes) ... Bargain prices on Bacillus , store variety for Bacillus . Compare prices an...