Wednesday, April 22, 2015
Algae invade amphibian egg masses
Phycologia – The establishment of symbiotic systems requires one organism to live in or on a host. For some North American amphibians, these symbionts are algae and they associate with their aquatic egg masses. Researchers have begun to speculate that these smaller organisms initially invade embryonic host tissues and cells and then transfer to the next generation of hosts.
Friday, April 17, 2015
Smaller anesthesia needle bore fails to reduce pain
Anesthesia Progress – A local anesthetic is often given during dental work to lessen pain, but for many patients the anesthesia injection is as bad or as scary as the experience of dental treatment itself. Dentists are constantly looking for ways to reduce the pain produced by injecting the numbing agent.
Friday, April 17, 2015
Review of whole slide imaging for pediatric specimens advances validation process
Pediatric and Developmental Pathology—Whole slide imaging is an emerging technology that is poised to impact the practice of medicine by extending the virtual reach of pathologists. Classified as a medical device by the U.S. Food and Drug Administration, whole slide imaging must be validated and approved before use in primary diagnosis. The College of American Pathologists has published guidelines for this validation, and a new study applies those guidelines specifically to specimens in the pediatric population.
Thursday, April 2, 2015
Foot Webbing Coloration Signifies Visual Signals of Maturation in Frogs
Herpetologica – Color and pattern change upon maturation is not uncommon among numerous animals. These changes tend to signify sexual development within the species and also increased male–male competition in searching for mates. Among frogs, color and pattern changes are quite common. Although vocal signals are normally used as a mode of communication, some frog and toad species use visual cues as well.
Tuesday, March 31, 2015
Insecticide Treatments in Combination with Herbicides Cause Crop Injury and Yield Loss
Weed Technology—As growers across the southern United States have planted increased corn acreage in recent years, corn-attacking insects have become a widespread problem, including populations of the western corn rootworm that have developed resistance to insecticidal proteins produced by genetically modified Bt corn varieties. A new study published in the journal Weed Technology investigated effects on crop health of combining insecticide and herbicide treatments.
Friday, March 13, 2015
Study Seeks to Reduce Effects of the South’s Most Costly Weed
Weed Science—Controlling Palmer amaranth costs Georgia cotton growers more than $110 million each year, making this the most economically destructive weed in the southeastern United States. Many populations of Palmer amaranth have evolved resistance to glyphosate and other herbicides over the last decade, and additional control methods for this weed are now being evaluated.
Tuesday, March 3, 2015
Human and Animal Interaction Identified in the Viking Age
Journal of Parasitology – Since 2001, ancient DNA has been used in paleoparasitological studies to identify eggs found in soil samples from prehistoric periods, because identification cannot be done by morphological study alone. The species of human parasites living during these periods, provide scientists with a better understanding of how Paleolithic societies might have been organized, with regard to human presence, animal domestication, hunting, and gathering.
Monday, March 2, 2015
Interviews reveal life experiences, needs of older people with clefts
The Cleft Palate–Craniofacial Journal – A child with a cleft lip or palate catches the eye of both parents and researchers, who easily focus on the physical and psychosocial effects of a cleft during the early years of life. Comparatively little attention is paid to adults who have been living with a cleft for decades.
Monday, March 2, 2015
Bone regeneration through tissue engineering offers new prospects for oral procedures
Journal of Oral Implantology—Regeneration of bone tissue could greatly benefit people with jawbone deficiencies due to tooth loss, infection, or trauma. While an ideal method of bone tissue engineering is not yet available, research with a collagen-hydroxyapatite-Mesenchymal stem cell composite is showing promise.
Wednesday, February 18, 2015
Gene study finds link with implications for melanoma therapy
Pediatric and Developmental Pathology – An odd-looking or changing mole or birthmark is always worrisome, particularly on a child. While most are benign, “cancer” jumps into every parent’s mind. Gene studies and potential related therapies are just one front in the wide-ranging battle against melanoma.