Tag: "size" at biology news
Diabodies act as guided missiles targeted to mammary tumor growth
... diabody, an antibody surrogate just one third the size
of native antibodies, can be used effectively as a...antigen-laden tumors. At the same time, its small size
enables it to efficiently find and penetrate these tumors," Adams said. Using the HER2 receptor prot...
Chernobyl study: Risk of thyroid cancer rises with radiation dose
...Limitations of the study included its small sample size
and its reliance on individual recall for reporting factors such as milk-consumption patterns that were used to estimate radiation dose. Efforts are under way to investigate a larger population in a similar fashion to see if these findings can be rep...
Analysis of gene expression in lymphoid cells can determine lymphoma cancer
...K9, a gene that encodes for a protein that has the size
of 43 kilodaltons," says Giordano, who is also co-director of the Center for Biotechnology in Temple's College of Science and Technology ( http://www.temple.edu/news_media/hkg696.html/ ). Over the next 10 years, CDK9 would prove to be a "multi-functi...
Modest climate change could lead to substantially more and larger fires
...orest ecosystems will likely reduce the number and size
of patches of older forests, the authors say. Corridors of wild areas between forests, through which species might migrate if their home territory goes up in flames, also could be affected, possibly eliminated. "The winners after fires in these case...
Molecular motor myosin VI moves 'hand over hand,' researchers say
...nchworm mechanism for movement. "The average step size
for the myosin VI arm was approximately 60 nanomet...eing employed." Surprisingly, myosin VI has a step size
that is highly variable, but on average is nearly as large as that of myosin V, which has a lever ar...
Protemix corporation announces discovery of way to repair hearts damaged by diabetes
...about a significant reduction towards normal heart size
in diabetic patients with cardiac enlargement. Diabetes is often accompanied by enlargement and dysfunction of the heart and coronary heart disease and these are major causes of death2. According to the World Health Organisation, over 194 million pe...
Professor calls for a new branch of learning
...in, a phenomenon seen with some viruses similar in size
to nanoparticles." Nanoparticles, materials the size
of millionths of a millimetre, are already present in large numbers in the air from natural sources ...
Highlights of American Chemical Society national meeting in Philadelphia, Aug. 22-26
...try by quantitatively measuring the metabolic pool size
of all of the biochemicals in a sample. This is often referred to as metabolomics. With this approach, "we have discovered potential biomarkers that could be diagnostic for ALS and are working to validate our findings," says Chris Beecher, Ph.D., v...
Study in Science reveals recreational fishing takes big bite of ocean catch
...dual fisherman -- setting limits on the number and size
of fish one can bring in -- without restricting the number of people allowed to fish. Approximately 40% of coastal states do not even require salt-water recreational fishing licenses. No states require a license for people younger than 16, and few r...
Washington University in St. Louis plays key role in sequencing moss genome
...l for the study of seed plants, and about the same size
as the genome of the crop plant rice. Mosses are considered to be the first land plants that evolved about 450 million years ago, predating the flowering or seed plants by some two hundred million years. Although this non-vascular plant lacks struct...
Meteorites supplied Earth life with phosphorus
...id belt where planetesimals can grow to a critical size
around 500 kilometers in diameter and a mechanism to disrupt these bodies and deliver them to the inner solar system." Jupiter drives the delivery of planetesimals to our inner solar system, Lauretta said, thereby limiting the chances that outer s...
JGI announces community sequencing program portfolio
...the moss Physcomitrella patens, which has a genome size
of just over half a billion bases. "Physcomitrella is a wonderful model system in that it is small, grows quickly, and is very amenable to comparative studies," says Brent D. Mishler, Director, University and Jepson Herbaria, University of Californi...
Anticancer drug zebularine specifically targets tumor cells
...es and Cheng showed that zebularine can reduce the size
of tumors in mice even when given orally, and that it does this tumor-whittling by turning on tumor suppressor genes that had been turned off through methylation. "This was the first time this type of drug has been able to reactivate silenced genes t...
Gold quantum dots have applications in biological labeling, nanoscale optics
...with narrower excitation spectra, smaller particle size
and comparable fluorescence to systems based on se...dots are made up of 5, 8, 13, 23 or 31 atoms, each size
fluorescing at a different wavelength to produce ultraviolet, blue, green, red and infrared emission...
PCB breakdown in rivers depends on sediment-specific bacteria, find Carnegie Mellon U. scientists
...bes in river sediments as well as their population size
and how they remove chlorine atoms from the PCB structure," said William Brown, Ph.D., professor of biological sciences and a principal investigator on the study. "This work tells us that PCB-digesting microbes need to be examined in each contaminate...
Plumbing trees' plumbing reveals their engineering skill
... engineering of deep-rooted trees in adjusting the size
and structure of their piping, or xylem, to maximi...iameters and thinner walls to maximize the conduit size
and enhance water flow. "The data are interesting because they show that the same individual plant c...
Using statistics to decipher secrets of natural mutation
...nto factors such as generation time and population size
that have varied in mammalian evolution. Green concluded that by contributing to a better understanding of naturally occurring mutations, the technique would help in understanding both how genetic disease arises and how evolution has occurred. A ne...
Possible new cure for psoriasis
...cytes produce an enzyme which cuts the APP down to size
as sAPPa: this is known as the a-secretase. Professor Herzog's research team has now blocked these 'molecular scissors'. 'We knew that certain metalloproteinase inhibitors impede the a-secretase. After adding these substances we observed that the di...
Hopkins scientists use blood proteins to detect ovarian cancer
... (15 of 23) with CA125 alone. Although the sample size
was too small for this difference to be statistically significant, the scientists conducted further studies lowering the cutoff value for CA125 to below current standards. The new test plus CA125 as well as CA125 alone detected 83 percent (19 of 23)...
T. rex owes its giant size to the ultimate teenage growth spurt
...yrannosaurus rex. T. rex reached its massive adult size
due to an extraordinary growth spurt that stretche...T. rex bones and calculated the corresponding body size
from circumference measurements of the femur. Correlating these two sets of data results in a growth...
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