Dominant birds stay leaner than their subordinates, study finds
...winter because they often go into hypothermia as a survival mechanism. Birds can lower their body temperatures by as much as 42 degrees. (The average body temperature for these birds was about 104 degrees.) During the night, birds tend to lose their ...Researchers successfully immunize mice against aggressive cancer
...ve them superantigens, we significantly extend the survival of the mice." Superantigens are proteins that are strong stimulators of the immune system. The researchers use the superantigens to boost the response to a vaccine, in this case an injection of dead melanoma cancer cells, Johnson said. The results of...Discovery of taste receptors may make bitter a bygone taste
...discriminate among the nuances of bitter. Rather, survival was aided by simply recognizing and avoiding bitter's many forms. In addition to Drs. Zuker, Ryba and Hoon, other authors of the study were Dr. Elliot Adler from the National Institute of Dental and Craniofacial Research; Drs. Ken Mueller, Jayaram C...Diversity of trees in forests may be caused by soil pathogens, IU biologists find
... from adult trees had a greater effect on seedling survival than density of seedlings, the more traditional fa...dlings beneath adult trees is 35 percent less than survival farther away. Soil pathogens can increase rapidly in the presence of their host, causing conditions...Scientists move in on genes conferring susceptibility, resistance to cancer
...eral of the regions discovered are associated with survival time once cancer has developed -- the first such r...ans. "Accurate prediction of tumor growth rate and survival time would be enormously beneficial in determining patient-specific treatment modalities, and could ...AVAX Technologies' AC Vaccine™ improves relapse-free survival
...ified irradiated tumor cells improved relapse-free survival of the mice, while treatment with unmodified cells had no effect. The study further indicated that vaccination with modified tumor cells elicited an immune response, which was identified by activation of CD8+ T-cells, and showed that these cells are...Monkeys pay one another for work
...e the payoffs?" asked Dr. de Waal. Noting the survival value of cooperative behavior, Dr. de Waal believes that his research offers insight into the evolutionary basis for an essential element of human society. "Society wouldn't exist without cooperative behavior," said Dr. de Waal. "Tit-for-tat is e......r oak-scrub habitat. The researchers monitored the survival and reproductive success of jays nesting along Old State Road 8, a two-lane highway at Archbold Biological Station in Highlands County. Over the nine years of the study, 434 jays bred on 55 territories and had 527 young that fledged. The researchers...Gene tug-of-war leads to distinct species
...determine whether disruption of imprinting affects survival of the offspring. An analysis of the animals resulting from such backcrosses revealed that the inviability of the hybrids was partly due to two genes -- one on the X chromosome of the polionotus species that is expressed only when inherited from th...Biological legacies a key of ecological rebirth after Mount St. Helens eruption
...gling understory bushes and shrubs, which made the survival of many of the invaders possible in the first place -- were then able to spread into adjacent areas. This is what del Moral and his co-authors on more than a dozen scholarly papers about the recovery mean when they say that "stochastic processes" ar...Hopkins scientists link human papillomavirus (HPV) to head and neck cancer
...ollow-up of participants revealed that the average survival of patients with HPV-positive tumors was 91 months or more but 76 months among patients with HPV-negative tumors. Other factors contributing to poor prognosis included advanced disease, age, and heavy alcohol consumption. "These data suggest that ...Chemical discovered that causes plant tumors
...the pea plants have developed, and for purposes of survival in nature, it works pretty well," said Robert Doss, a plant physiologist with the USDA Agricultural Research Service and OSU Department of Horticulture. Doss was a co-principal investigator on the study along with Proebsting and James Oliver, a chemi...NSF awards $4.2 Million grants to three coastal sites for long-term ecological research
...amics of key kelp-forest species, and the ultimate survival of the kelp forest itself....The hair of the bear: USGS releases grizzly bear numbers in Glacier National Park
...when genotyped, will allow Kendall to estimate the survival rate of bears between 1998 and 2000, an important factor to understand when managers set conservation actions and priorities. The DNA profiles of the individual bears will also allow resource managers to address future conservation issues by providin...Introgen Therapeutics reports progress in gene therapy studies at annual ASCO meeting
...nhanced local tumor control, and ultimately longer survival times for those patients who have extensive disease not amenable to surgery." The second presentation is titled "Tolerance and Safety of RPR/INGN 201, an Adenoviral Vector Containing a p53 Gene, Administered Intratumorally in 309 patients with Adva......even of the study patients have died with a median survival of 11.5 months and 3 are surviving for 6-16 months. Dr. Berd stated, "We are very encouraged by the data gathered to date in ovarian cancer, especially since we are continuing to observe key immunological and clinical responses in a group of patient...Targeted Genetics presents clinical data on E1A cancer gene therapy
...E1A as a single agent survived, as compared to 10% survival in the liposome alone or 5-Fluorouracil-treated groups. These data were also presented in April at the American Association of Cancer Research 91st Annual Meeting . "We are building a strong franchise around our E1A technology," said H. Stewart Pa......published in 1997 showing that M-Vax increases the survival rate of patients with advanced Stage III melanoma,...sed no major side effects. The overall five-year survival rate from all these trials for patients with spread of melanoma to one nodal area was 50%, versus hi...Research indicates global warming could impact songbird populations
...lue warbler, a migratory songbird. They found that survival and reproduction rates for these birds were lower ...ss in their New Hampshire breeding grounds and low survival rates among adults wintering in Jamaica. In contrast, reproductive success and adult survival were s......albumin will result in better health and increased survival for patients treated with hemodialysis," Eustace says. Another ongoing study is measuring the effects of fewer supplements on albumin levels, he says. Further study will investigate how the amino acids increase serum albumin levels....