Below the surface: New clues to plant signaling from the roots
...ers report this week the identification of a plant developmental control point that, while originating in the root,...nd the ways in which roots are able to effect this developmental control from afar. Several characterized plant hormones, such as cytokinin and abscisic acid, are th...Biologists ID molecular block for social 'cheaters'
...me stalk cells. These cells underwent a late-stage developmental about-face and supplanted dimA knockout cells that were initially targeted to become spores. "This test confirmed that the dimA gene was essential not only for DIF-1 recognition but also for spore production," said paper co-author Gad Shaulsky, assoc...Researchers provide road map for generating B cells from stem cells
...ugh each crossroad, guiding them down one specific developmental path, preparing them to respond to signals yet to ...ner to properly direct a stem cell through a given developmental sequence."...Environmental exposures before and after birth can harm children's lungs
...reach the fetus and damage DNA, affect the child's developmental programming, which then leaves the child's airways at risk for future harm." People living in high-traffic areas and poor housing are at especially high risk for PAH and ETS exposure. PAHs can come from motor vehicle emissions, residential...Arctic mystery no longer: Dinosaurs walked Canada's great north
...wo parallel research tracks: fossil collection and developmental biology. His main pursuit is to track the evolution of one species and their development. In Niger alone, his explorations with University of Chicago palaeontologist Paul Sereno led to the discovery of eight unknown dinosaur species and five new cro...Using fruitflies to examine alcohol tolerance
... biology, and has provided essential insights into developmental and cellular processes that are shared with higher animals, including humans," said Berger. "Flies have a relatively sophisticated nervous system and are capable of many well-characterized complex behaviors, including response to drugs of abuse such...Scientists explain how morphogens work
...l Cell, Xinhua Lin, PhD, an assistant professor of developmental biology at Cincinnati Children's, concluded that morphogens work by "diffusion." "These findings provide new insight into the understanding of the mechanisms that control the function of morphogens," Lin said. "In order to treat diseases related ...Delay in cutting the cord helps premature babies
... will be followed until they are 7 months old when developmental testing will be done. Eventually, she hopes to track them up to age 5. Although the study is not complete, she says that the data safety checks show no harm from a delay of 30 to 45 seconds at birth. While expectant mothers should not have to think ...Expert panel offers prelimary report on health effects of assisted reproductive technologies
...ns and genetic anomalies, cancer, psychosocial and developmental outcomes, and health outcomes beyond one year. In addition, for neonatal outcomes, including premature birth, low birth weight and perinatal mortality, the panel considered a recent systematic review and metanalysis. So far, their systematic re...Gene-altered mouse is model for rare autoimmune syndrome
...sight into Sjgren's syndrome, but into the general developmental machinery of the immune system. The immunologists, Yuan Zhuang, HongMei Li and MeiFang Dai, published their findings in the October 2004 issue of the journal Immunity. The work was sponsored by the National Institutes of Health and the Leukemia an...New center to map DNA of key lab mice
...ude: cancer, Parkinson's, Alzheimer's, asthma, and developmental disorders such as autism. Researchers already have identified dozens of genetic components to these disorders, but few well-established animal models are available for understanding the interplay of genes and environment. Therefore, in addition to ...Genetically endowed worm may substitute for rodents in some toxicology testing
...ensively evaluating C. elegans' potential value to developmental toxicology. "We know basically everything about the development of this particular organism through its entire lifespan," said NTP associate director Christopher Portier. "Since we're interested in finding something that, while it won't...UCSD biologists discover chemical important in guiding visual system development
...y in the developing retina may explain some of the developmental defects seen in fetal-anticonvulsant syndrome," sa...e developing fetus. The visual problems and other developmental defects characteristic of fetal anti-convulsant syndrome could result from these drugs interfering w...Support for fragile X syndrome needed
...d boys display autistic-like features or pervasive developmental disorder. "Unfortunately few resources are available in Montreal and Quebec to inform parents, clinicians and teachers about the syndrome," explains Kim Cornish, director of McGill's Neuroscience Laboratory for Research and Education in Developmental...U-M researcher examines the cell's housekeeping habits
...s Instituteand professor of molecular cellular and developmental biology and biological chemistry. Klionsky, who has been studying autophagy in yeast, has written a review article on the latest work in the field with post-doctoral fellow Takahiro Shintani that is featured on the cover of the Nov. 5 edition of Sci...Researchers discover molecular timekeeper in bone development
... into bone. Missteps in this process can result in developmental defects and bone diseases. HDAC4 belongs to a family of enzymes that inactivate genes. Unlike other members of this family which are found in numerous tissues, HDAC4 is expressed in only a few tissues, including bone. ...Sperm enzyme is essential for male fertility, study shows
...eborah A. O'Brien, associate professor of cell and developmental biology at UNC's School of Medicine, and her colle...shi Miki, research assistant professor in cell and developmental biology; Dr. Weidong Qu, postdoctoral researcher at UNC and associate professor at Fudan University;...Genome of ancient fish could reveal evolutionary mysteries, Stanford scientists say
...t year Myers and David Kingsley, PhD, professor of developmental biology, successfully recommended that a fish called the stickleback be added to the list of organisms to be sequenced by the National Human Genome Research Institute at the NIH. Myers said he, Noonan and other researchers who contributed to the arti......n these receptor complexes, which are important in developmental milieux from peripheral neurogenesis to the develo...T-independent GFR and RET-expressing cells in some developmental regions, however, have prompted strong speculation that GFR might be able to operate even in the abs...Study identifies molecular complex vital to creation of miRNAs
... born with heart defects, immune deficiencies, and developmental and behavioral problems. Intriguingly, one in four also goes on to develop schizophrenia, a disorder for which causative genes have yet to be identified. The new study appears in the November 11 issue of Nature . "Discovery of this microprocessor co...