Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs
...atter concerns. It does, however, show that inbred mammals can be so genetically alike that their immune systems distinguish poorly between self and nonself. The proof: The animals accept skin grafts--in effect, organ transplants--from each other. "No one had found another wild animal that could tolerate ski...Hawaiian Whales Show 'No Overt Response' To Sounds Of ATOC Simulation
...harm -- or even deafen -- whales and other marine mammals with sensitive hearing. Run by Scripps Institutio...lation boats recorded what whales and other marine mammals hear every day: the ocean's ambient sounds, such as wind and waves, seismic activity and animals,...Enhancin Protein Attacks Insect Immune System
...ng in the rapid death of the insect. "Mucins from mammals have been extensively studied," Granados said. "In contrast, knowledge about invertebrate mucins is very limited." Wang and Granados discovered and cloned the first invertebrate intestinal mucin gene from the cabbage looper larvae (Trichoplusia ni)....Oak Regeneration In Some Ohio Forests Is Failing, Researchers Find
...de effects on all thespecies of insects, birds and mammals that live there, possibly even to thepoint that some species of animals or plants could become locally extinct." This concern is a driving force behind McCarthy's study, which was partof the first phase of a larger project by the Northeastern...Low Oxygen, Key To Fetal Development, Also Offers Cancer Clues
...ypoxia on the developing placenta, thestructure in mammals that develops and serves as a bridge betweenmother and baby during pregnancy. The team studied cytotrophoblasts, the cells from theplacenta that form the connection between mother and fetus byattaching to the uterus. These cells eventually evolv...Colorado State Anthropologist Finds Fossil Treasures In Africa
...ana and contains well-preserved specimens of small mammals thatmay have roamed the earth sometime between 100...lion years ago. Most likely used by owls and other mammals to eattheir prey, the cave is so rich with fossils it's called Bone Cave. Waddle and the other rese...Purdue Researchers Track Oil Spill's Effects On Sea Otters
... ducks, invertebrates, marine mammals, terrestrial mammals and sediments. Institutions involved include Purdue, the University of Alaska, the University of Washington and the National Geologic Survey, as well as the private sector. "This is the first time a significant comprehensive effort has been made to f...Strange South American Fossil Mammals Found In Madagascar And India
...ey are today. Ironically, though the group of mammals was previously known only to be from Argentina, it was named Gondwanatheria after the supercontinent of Gondwana, which once included all of the landmasses of the southern hemisphere. "These are major discoveries that go far beyond their obvious......ith an unknown number of coots. No other birds or mammals have been found to be affected. Despite the exhaustive efforts of federal, state and private-sector scientists, the cause or source of the disease remains a mystery, said Dr. Kimberli Miller, a wildlife disease specialist at the Center. Oth...Widespread Genus Of Monkeys Gives Up Genealogical Secrets To Columbia Researchers
...pected to tellanthropologists more about how other mammals dispersed and adapted to the sameconditions. Among the many findings is that the sole African member of the genus andthe widespread Asian long-tailed macaques have been inaccurately placed amongthe other macaques. The study, which appears ...Virologists Track New Influenza Threat
... their surface proteins. People and other mammals commonly get H1, H2 and H3 influenza and have antibodies that can fight off infection for those types. The H5 virus is frightening because people have no antibody protectio...MIT Biologists Identify Aging Mechanism
...atter cells -- known as stem orprogenitor cells in mammals -- are found in organs such as the skin, kidney,liver and blood. The authors suggest, too, that yeast mother cells may be analogous to mammalianstem or progenitor cells, just as SGS1 was homologous to the human WRN gene.Thus, the next phases of aging......ON Chromatin and telomeres in ageing in yeast and mammals B. KENNEDY, N. AUSTRIACO, D. LOMBARD, K. MILLS, T. SMEAL, R. MARCINIAK, S. MA, D. SINCLAIR and L. GUARENTE The limited reproductive life span of normal human cells in culture S. SHALL Human ageing and telomeres C. B. HARLEY Telomerase and cance...New Dinosaur Finds In Antarctica Paint Fuller Picture Of Past Ecosystem
...t only by dinosaurs but probably also by marsupial mammals dispersing fromthe Americas to Australia via Antarctica. The hadrosaurs are a distinctive group of American dinosaurs, known for fancy crests on theirskulls with networks of passageways that may have been used for vocalization and that maysuggest t......ber-Katz, "that repair of woundsbecame dominant in mammals with the development of a complex immune system,which was there to protect against tumors. It is known that molecules expressedin regenerating tissue are also expressed in tumors and, for that matter, duringmammalian development. In fact, fetal wou...'Mean Gene' Found In Africanized Honey Bees
...edators. Bee stings are a response to predation by mammals -- bee venom is specialized for causing pain in vertebrates." Africanized bees are just one of many subspecies of honey bees. They were introduced to the Western Hemisphere by an accidental release from a Brazilian geneticist in 1956 and spread rapid...Excavations In Prehistoric Chinese Cave Uncover Unusual Collections Of Large Mammals
...vores. Packs of animalscould have killed the large mammals and dragged them back totheir dens. However, a close analysis of the bone fragmentsrevealed a definite human touch. "Clearly humans are doingsomething with the bones, because we're finding them burnt," saidSchepartz. "There are cut marks. We found a ...Butterfly Wings, Beetle Horns Teach Biologists Basic Lesson In Development's Laws
...ld be more difficult to detect in organisms suchas mammals that grow continuously with continuous feeding," he said. "In suchcases, the organism can dynamically shunt food between one system and another towhere it's needed." Importantly, the phenomenon was demonstrated in two very differentspecies,...Infant Dependency Drives Menopause, NSF-Supported Researcher Reports
...versal feature of mammalian females. "Since female mammals are the primary caretakers of infants, we would expectmenopause to evolve whenever child-rearing is extensive and prolonged," Packersaid. Packer's co-authors are Marc Tatar, assistant professor in the BrownUniversity department of ecology and...Grazing by herbivorous mammals like bison increases biodiversity in North American grasslands, says National Science Foundation (NSF) ecologist Scott Collins, even during periods of frequent burning and other stresses. In fact, loss of species diversity in these grasslands due to...