New DNA 'fingerprinting' technique separates hemp from marijuana
... DNA and generates numerous fragments of DNA, each defined by particular "marker" DNA sequences that act like bookends. The lengths of the fragments within the bookends were found to vary according to the cultivar. Thus, the pattern of fragment lengths adds up to a composite picture of each cultivar. "With t...Evolutionary biology research techniques predict cancer
...precancerous tissues. "Although researchers first defined cancer in evolutionary terms in the 1970s, few researchers have actually studied the disease this way," says Maley, lead author on the study and an assistant professor in the molecular and cellular oncogenesis program at Wistar. "We wanted to know: I...Inducing melanoma for cancer vaccine development
...ect and destroy cancer cells carrying one of these defined cancer antigens." According to Dr. Van den Eynde, ...er vaccines at the preclinical level either have a defined cancer antigen in a transplanted tumor, or they have an 'original' tumor that doesn't have a defined...Molecular discoveries aim at advancing early diagnosis of cancers
...e and colleagues in partnership with DiaGeneic ASA defined a set of 58 genes that were differentially expressed by peripheral blood cells in the presence or absence of breast cancer. An array platform with 22,000 probes interpreted the blood-borne message from samples of 64 women with breast cancer and 76 wo...Wide variety of physical activities may protect teens against risky behavior: Study
...y compared seven distinct clusters of adolescents, defined according to the types of physical or sedentary activities they participated in frequently. These clusters were identified in 2005 by Nelson and Gordon-Larsen, and UNC professors of nutrition Drs. Linda Adair and Barry Popkin. "Our previous research ...16-Year follow-up study reinforces Betaseron long-term efficacy, safety and tolerability in MS
...s on short-term treatment. Long-term treatment was defined as use of Betaseron for more than 80 percent of th...2 years or longer), while short-term treatment was defined as use for less than 10 percent of the time (approx. 1.6 years or less). The impact of long-term tre...Vitamin D and flavonoids examined for impact on breast and ovarian cancers
... "The associations were stronger when exposure was defined as cumulative average flavonoid intake over a period of 14 years, which suggests that long-term intake of flavonoids may be important," Gates said. But she cautioned that "these findings need to be confirmed by others before any public health recomm...Markers of gene, protein, or micro-RNA activity predict outcome in prostate and colorectal cancers
... non-organ-confined disease. Cancer recurrence was defined in this study as a rise in prostate specific antig... found they could develop a methylation score that defined a good prognosis (with 94 percent PSA-free survival 10 years after surgery) and a poor prognosis gro...Next phase reached in definition of Mars Sample Return mission
...ternational MSR mission. Past ESA work has already defined as a starting point an MSR mission launched in two parts. The first consists of a Mars orbiter and an Earth return capsule, while the second carries the surface lander and the Mars ascent vehicle which will launch the sample into Mars orbit ready for...Biotechnology Study Center honors Jean-Pierre Changeux, Charles Weissmann and Eric Kandel
... and mice. By anatomical and genetic means, he has defined the common features of explicit memory storage in mice and implicit memory storage in the sea snail Aplysia, a simple organism that he has established as the model organism of choice in neurobiology. Working with Aplysia, he has recently raised the p...People with near death experiences can differ in sleep-wake control
...ology. For the study, a near death experience was defined as a time during a life-threatening episode of danger such as a car accident or heart attack when a person experienced a variety of feelings, including a sense of being outside of one's physical body, unusual alertness, seeing an intense light, and a...Diabetes and cancer: Alpha connection
...April 12) -- A study published by Nature today has defined the function of p110 alpha, the flag-ship molecule of the eight member PI3K family, which is one of the most frequently activated pathways in cancer. The function of p110 alpha in the body has eluded researchers for over a decade but a new approach t...Tips from the journals of the American Society for Microbiology
...detection, identification, and quantification of a defined phylotype of archaea in infected root canals," say the researchers. "This finding may contribute to an emerging view of archaea as potential human pathogens." (M.E. Vianna, G. Conrads, B.P.F.A. Gomes, H.P. Horz. 2006. Identification and quantifica...Study shows gene candidates for predisposition
...is were not exposed to alcohol, however. The study defined only the transcriptional signatures of genetic predisposition to high and low levels of alcohol consumption. But the sheer number of differences in those signatures suggests clearly distinct brain pathways between mouse models with different levels o...Formation of cellulose fibers tracked for the first time
...found that cellulose synthase moves along "tracks" defined by the microtubules. When the microtubule tracks were disrupted with specific drugs, the cellulose synthase molecules kept moving, but they followed different, less directed patterns. "Many scientists had suspected a relationship between cellulose sy...Joslin's C. Ronald Kahn, MD, to discuss genetics of obesity at AACE meeting
...t three decades, Dr. Kahn's research has literally defined the field of insulin signal transduction and mechanisms of altered signaling in disease. In 1981, Dr. Kahn's laboratory discovered that the insulin receptor is an insulin-stimulated enzyme with protein tyrosine kinase activity. His laboratory also de...Male rivalry increases when females at most fertile, say researchers
...f dominance for each image. A dominant person was defined as someone who looked like they could 'get what they wanted'. Participants were asked to provide information on whether or not their female partner used oral contraception and the date of her current or previous menses. Male participants whose par...The birds and the b's: Challenging Chomsky, starlings learn 'human-only' syntax patterns
...s have the capacity to classify acoustic sequences defined by recursive, center-embedded grammars. Recursive center-embedding refers to the common characteristic of human grammars that allows for the creation of new (and grammatically correct) utterances by inserting words and clauses within sentences theo...Inflammation markers identify fatigue in breast cancer survivors
... at the University of California, Los Angeles have defined conditions associated with disabling fatigue that ...the quality of life of these patients." Dr. Irwin defined the fatigue biomarker in collaboration with Alicia Collado-Hidalgo, Julienne E. Bower, Patricia A. G......have imaged it, characterized it biochemically and defined its role in two cellular activities that help bring about gene silencing. According to Pikaard, genes can be turned off when acetyl groups little two-carbon entities are removed from histones, the proteins that wrap the DNA, and when meth...