Researchers discover human embryonic stem cells are the ultimate perpetual fuel cell
...ell nourishing proteins to help keep their parents ticking over. Scientific Director Mick Bhatia and colleagues provide the first evidence that human ES cells have the unique ability to generate human-ES-cell-derived fibroblast-like niche cells (hdFs) in vitro despite removal from their in vivo microenvir...UC researchers shatter world records with length of latest carbon nanotube arrays
...ere able to grow the arrays up to 18 mm," he says, ticking off the achievements. "Second, we produced a uniform carpet of 12-mm carbon nanotube arrays on a 4-inch wafer, which moves the invention into the field of scaled-up manufacturing for industrial application. Third, we filed a patent application on the...No need to thank dinosaur-killing asteroid for mammalian success
...nges occur at a relatively constant rate, like the ticking of a clock, scientists can estimate the time the species diverged from their common ancestor by counting the number of mutations. Using radiocarbon dating, scientists can also estimate divergence times from the fossil record. Gittleman and his collea...Blood's clotting cells harbor 'ticking time bombs,' finding may help extend blood supply
...in wound healinghave internal clocks that act like ticking time bombs, predetermining their death from the moment they are born, according to a new study in the March 23 issue of the journal Cell, published by Cell Press. The researchers said that the findings could have profound implications for the diagn...Researchers publish first working model that explains how biological clocks work
... everything from humans to lowly bread mold. These ticking timekeepers hold the key to many diseases, annoy passengers on intercontinental flights and can mean life or death for small creatures trying to survive in nature. Despite the importance of biological clocks, their mechanisms have remained unclear....A tumour suppressor in mice and men
...ad to a tumour. Oncogenes are, in this sense, like ticking time bombs, which can cause cancer. Their activity is controlled in healthy cells by tumour suppressor genes. The cellular "opponents" of the Bcl-3 oncogene, however, had not yet been known before this study. The protein has to find its way to the nu...Defusing a time bomb: Heart attack risk-detection technology developed at UH
...ity of Houston professor pave the way to uncover a ticking "time-bomb" in the heart. Ioannis A. Kakadiaris, an associate professor of computer science at UH and director of the Computational Biomedicine Laboratory (CBL), and doctoral student Sean O'Malley are collaborating with Dr. Morteza Naghavi and othe...Rockefeller researchers discover a biological clock within a clock
...s a complex system of gears and springs to keep it ticking precisely, individual cells have a network of proteins and genes that maintain their own internal clock -- a 24-hour rhythm that, in humans, regulates metabolism, cell division, and hormone production, as well as the wake-sleep cycle. Studying this "...Researchers quantify more noise in gene expression
...etically identical cells growing side-by-side from ticking in unison." Intrinsic noise resulting from low copy numbers of molecules has been the focus of earlier studies by Hasty's group. Its Nature paper focuses on extrinsic noise, an even larger source of variation between identical cells growing side-by-...A resetting signal keeps circadian rhythm on track in Drosophila fruit flies
...ay synchronized, so we controlled the way time was ticking in individual clocks: we made the morning cells run faster and the evening cells relatively slower, and the other way around," explained researcher Dan Stoleru. "In this fashion, we introduced phase differences between them. It turned out that no mat...Flipped genetic sequences illuminate human evolution and disease
...h an inversion and one allele without represents a ticking time bomb in genetic terms, Scherer said, since these alleles may improperly align and recombine during replication, ultimately causing DNA deletions or a loss of DNA that subsequent generations inherit. Scherer's prior research on Williams-Beuren sy...Glow-in-the-dark zebrafish at UH hold keys to biological clocks
...ing in their genetic makeup that gets their clocks ticking without parental influence, however, we determined that it does take some sort of environmental input for the clock to start. In this case it was exposure to light/dark cycles after the fourth day of development, about the age when the fish start to...