Differences between boys and girls show less than three weeks into pregnancy
...rary structure formed in the ovary after an egg is shed that produces oestrogen and progesterone until the placenta can take over their production. "Other research has already shown that MSHCG is significantly higher in the presence of a female fetus in the second and third trimesters of pregnancy. But we...Stem cell study provides new clues to origin of Down syndrome
..., University of Cambridge, and others has begun to shed light on the earliest genetic events in humans that give rise to a serious cognitive disability. It has long been known that most instances of Down syndrome, which affects nearly 350,000 people in the United States alone, results from an extra chromo...New test detects colon cancer gene
...ent in stool; the remainder come from normal cells shed into the feces. Moreover, human DNA represents only about one-billionth of the total DNA found in stool samples, said Vogelstein; the majority of DNA present in feces comes from bacteria. Finally, mutations in APC can be of different types and can ...Stool test for colon cancer reported by Kimmel Cancer Center at Johns Hopkins
...oint colon cancer-linked APC gene mutations in DNA shed into feces. First identified in 1991 by research ...his early colon cancer marker was present in cells shed into stool, it required several years of additional research to develop the technology to reliably i...Origins of 'modern' behavior might be linked to population pressures
...ment of Science (AAAS) meeting. Their study could shed light on the origin of modern humans, a contentious topic in anthropology. Some researchers think that modern humans arose as a new species in Africa around 200,000 years ago, subsequently migrating out of Africa and replacing earlier groups of human...Sea levels likely to rise higher than IPCC predictions
..." disintegration process. Before that, the shelves shed their ice in a more gradual fashion, he said. The researchers have observed melt ponds forming in these particular regions, and believe this melting may be triggering the ice-shelf collapse. It would take several more decades of warming, however, bef...Undergraduate unraveling genetic mysteries in fruit flies
...way fruit fly embryos create salivary glands could shed light on the development of human organs. Many of the genes in fruit flies are very similar to human genes, said Comeaux, a Johns Hopkins junior and a 1999 graduate of Port Neches-Groves High School in Texas. By studying how these genes work, we can ...SV40 found in human lymphoma samples
...n 42 percent of non-Hodgkin lymphoma samples could shed new light on the genesis of these blood cancers that have become more common over the past 30 years, said BaylorCollege of Medicine scientists in a report in the March 9 issue of The Lancet, a British scientific journal. About 55,000 new cases of the...Putting microRNAs in their place
...e discovered a novel protein complex that may help shed light on the function of a newly discovered class of small RNAs, as well as a common hereditary neurodegenerative disease. An international research group, headed by Dr. Gideon Dreyfuss at UPENN School of Medicine, has successfully identified 31 nov...Scientists conduct first DNA field tests on Antarctic soil microbes
...for use at extremely cold temperatures, as well as shed light on the possibility of life on other planets. To determine if they were succeeding in collecting a diversity of polar microbes in their sampling operations, the scientists needed to be able to examine the tiny life at the genetic level. Getting...Bronx Zoo feathers help save rare birds half a world away
... North America. It wasnt money, but tail feathers shed from captive hornbills. The feathers will be shipped to Sarawak tomorrow, where officials will distribute them to indigenous people for use in traditional headdresses and ceremonies. This will offset the need to hunt rhinoceros and helmeted hornbill...Scientists trace recently found genes to the evolution of big brains
... findings, published in the April 5 issue of Cell, shed light on how the Olig 1 and Olig 2 genes direct the formation of a key type of supporting cell required by nerve cells to transmit their signals efficiently over long distances. (Cell selected the study for early publication and has already posted th...Rice, first crop plant to be sequenced, may help fight world hunger, Science authors say
...esult of a massive gene duplication event, and may shed light on how monocots and dicots evolved and diverged some 200 million years ago. THE JAPONICA RICE GENOME RESULTS The japonica draft sequence, produced by Stephen A. Goff and colleagues, contains 389 of their estimate of 420 million base pairs...Honey the darker the better Has potential as dietary antioxidant
...ther in progress or undergoing data analyses, will shed more light on the exact phenolic compounds in honey and on how effectively honey that is consumed prevents oxidation in the blood of human subjects. Phenolic compounds are phytochemicals, which are non-nutritious compounds in foods that may carry spe...Unique social system found in famous Tsavo lions
...and social life of maned and maneless lions should shed light on the evolutionary significance of the mane, says Kays, curator at the New York State Museum in Albany. Kays was a post-doc at The Field Museum when the research was conducted. On-going research Whatever the ultimate evolutionary purpose o...Understanding our ape 'cousins:' chimpanzee genetics may shed light on human diseases
...an Association for the Advancement of Science, may shed light on why chimps and humans are so genetically similar--humans and chimpanzees share 98.7 percent of their DNA sequences--yet so mentally and physically different. Zeroing in on these differences could also help scientists learn more about the ge...Gene study determines how humans are related to fruit flies and nematode worms
... insects (and other arthropods) and nematodes both shed their outer covering, a process called ecdysis. T...has been misleading, because the structure that is shed in arthropods is completely different from that in nematodes, and some vertebrates such as snakes al...May media highlights: GEOLOGY and GSA TODAY
...Genovesa Island and its surprisingly young age may shed some light on a longstanding question about Galpagos biogeography. Lava lizards (Microlophus) are found everywhere in the Galpagos Archipelago except for remote Wolf and Darwin Islands, a few isolated rocks, and Genovesa. The lizards conspicuous abs...First live studies of important cell structures may shed light on Alzheimer's, other diseases
...ular biologists at the University of Georgia could shed light on numerous diseases in which Hirano bodies may play some role - including Alzheimer's disease, Lou Gehrig's Disease and cancer. The research was just published in the Journal of Cell Science and was funded by the National Science Foundation an...Alzheimer's, other diseases, may benefit from first live studies of key cell structures
...ular biologists at the University of Georgia could shed light on numerous diseases in which Hirano bodies may play some role--including Alzheimer's disease, Lou Gehrig's Disease and cancer. The research was published in the May issue of the Journal of Cell Science and was funded by the National Scien...