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Tag: "category" at biology news

Source of molecular triggers in cutaneous T cell lymphoma identified

...ncer Institute first identified CTCL as a separate category of lymphoma thirty years ago. The Yale research group reported that, like all T cells, the cancerous CTCL cells require antigenic stimuli delivered by specialized dendritic cells of the epidermis, referred to as Langerhans cells (LC), in order to re...

Estrogen-like Component of Plastic Stimulates Growth of Certain Prostate Cancer Cells

...as been shown toencourage the growth of a specific category of prostate cancer cell,potentially affecting the treatment efficacy for a subset of prostatecancers.According to a study published in the January 1 issue of CancerResearch, such prostate cancer cells proved to be vulnerable toexposure to the chemica...

New Insights Into HIV Immunity Suggest Alternative Approach to Vaccines

...e disease or other harm. The second immune system category is adaptive B cell immunity, a slower response that creates powerful, pathogen-specific antibodies and provides lasting immunity. The body's normal response to infection is to produce adaptive antibodies that target only the invading virus or other p...

Leprosy microbes lead scientists to immune discovery

...response to the detection of foreign bacteria. One category of defensive cells, macrophages, seek out and engulf the infectious bugs. The other group consists of dendritic, or "antigen-presenting" cells, which seize distinctive pieces of the enemy and use them to "educate" and stir up a second immune response...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

...rs scientists have realized that microRNA is a new category of regulatory molecules and identified hundreds of different microRNA in mammals. The big question was, what are they doing? About a dozen years ago a few studies came out that showed that microRNA could suppress translation in certain Drosophila (f...

Lipids get new comprehensive classification system

...egory, the next two (5-6) to the class within that category and the next two (7-8) to the subclass. The last four characters of the ID comprise a unique identifier within a particular subclass and are randomly assigned." The new classification system has already been implemented, and Dr. Dennis, Dr. Fahy and...

The first impact factor for PLoS Biology ?13.9

...he National Academy of Sciences. In fact, in ISI's category of general biology journals, PLoS Biology is ranked number 1. PLoS Biology was launched in October 2003, as an open-access home to the very best in biological research. By any measure, the impact of this launch was impressive. The on-line publicatio...

A molecule impedes the destruction of the 'Brucella' bacteria

...rucella is a model of an intracellular parasite, a category that includes other important bacteria, such as those of tuberculosis or legionelosis. Brucella penetrates the macrophages within membranous vesicles that are not fused with lysosomes (structures containing cellular products necessary to destroy bact...

Sensor web simulation investigates technique to improve prediction of pollution across the globe

...ntal conditions. "These simulations fall into the category of 'proof of concept,' to assess the feasibility of what is also planned for the next generation observing systems to enable real, full-fledged sensor web measurements," explained Talabac. "We hope to demonstrate that such an approach, or 'targeted i...

Hunger in America rises by 43 percent over last five years

.... Rates of hunger increased in almost every single category of household during the same time, with single mothers and those living in or near poverty continuing to suffer from severely high rates of both food insecurity and hunger. California, Texas, Arkansas, Missouri, North Carolina, New Mexico, Oklahoma ...

Researchers develop new method for studying 'mental time travel'

...e seconds before subjects recalled items from that category -- suggesting that participants were bringing to mind the general properties of the images in order to cue for specific details. "What we have learned over the years is that what you get out of memory depends on how you cue memory. If you have the ...

Seaweed yields new compounds with pharmaceutical potential

...nek said. "It's very unusual. They represent a new category of organic molecules. It's exciting as a biochemist to observe that living organisms have evolved the ability to synthesize such unique and exotic structures compared to other molecules typically produced by seaweeds." The source of these new molecu...

Researchers know what you were about to say; fMRI used to detect memory storage and retrieval

...n the brain. When the participants moved from one category to another, the researchers noted a corresponding shift in brain activity. "The results of this experiment suggest that when we think back to the past, each detail we remember triggers another, until the memory returns completely," Polyn said. "In ...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

... in each region, with maximum numbers set for each category of vessel based on their catching power. Enforce, through fisheries co-management, the existing legislation which bans the introduction and use of certain types of fishing gear types. ...

Newly discovered protein kills anthrax bacteria by exploding their cell walls

...l. They are separated into categories A through C, category A biological agents being the scariest: They are easy to spread, kill effectively and call for special actions by the pubic health system. One of these worrisome organisms is anthrax, which has already received its fair share of media attention. But ...

How can we protect patients with weakened immune systems from influenza?

...ological warfare -- put anti-flu measures into the category of biodefense. Under a biodefense program mandated by Congress, the National Institute of Allergy and Infectious Diseases, in conjunction with the Department of Defense, has awarded the grant to researchers at The Children's Hospital of Philadelphia...

Researchers use mass spectrometry to detect norovirus particles

...dness as a tool for rapidly detecting norovirus--a category B bioterrorism agent--and other viral public health threats. The study is published in the April 2006 edition of Applied and Environmental Microbiology. In simplified terms, mass spectrometry is essentially a scale for weighing molecules. A laser tu...

Ancient ants arose 140-168 million years ago

...dness as a tool for rapidly detecting norovirus--a category B bioterrorism agent--and other viral public health threats. The study is published in the April 2006 edition of Applied and Environmental Microbiology. In simplified terms, mass spectrometry is essentially a scale for weighing molecules. A laser tu...

UF scientists test improved gene therapy method for hereditary heart conditions

...seases called long Q-T syndrome, the heart failure category where many folks have been attempting to modify contractility with gene transfer," said Byrne, who also is affiliated with the UF Genetics Institute. "We're using the very same strategies used with medical treatment but without ongoing use of medicat...

Everything in its place: Researchers identify brain cells used to categorize images

...he set of motion patterns and did not encode their category membership. Category representations in the parietal cortex also changed dramatically with learning and experience. Over the course of several weeks, the monkeys were retrained to group the same visual patterns into two new categories. Parietal cort...

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