Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches ...

Female plants were more likely to be colonized by the mycorrhizal fungi than male plants The war between the sexes has been fought on many fronts throughout time—from humans to birds to insects, the ...

Age-related hearing loss is the most common sensory disorder among the elderly. But scientists are still trying to figure out what cellular processes govern or contribute to the loss. Now a ...

Un estudio español ha determinado que la inhibición de las proteínas Bcl, ligadas al cáncer, tiene lugar en la mitocondria. Miércoles, 21 de Octubre de 2009 Laboratorio de Péptidos y Proteínas. Un ...

All multicellular organisms require apoptosis, the controlled death of cells. Without apoptosis, 2 tons of bone marrow and lymph nodes and a 16-km intestine would probably accumulate in a human by ...

DNA damage has emerged as a major culprit in cancer and many diseases related to aging. The stability of the genome is supported by an intricate machinery of repair, damage tolerance, and checkpoint ...

Los estudios sobre la protección que los telómeros confieren a los cromosomas han merecido el Nobel de Medicina 2009. Carol Greider, Jack Szostak y Elizabeth Blackburn han sido galardonados por ...

El pez cebra es un clásico en los laboratorios de investigación animal. Las mejoras en el conocimiento de su proceso de clonación pueden tener implicaciones importantes en la investigación básica de ...

In nature, halogenation is a strategy used to increase the biological activity of secondary metabolites, compounds that are often effective as drugs. However, halides are not particularly reactive ...

Metalloproteins catalyse some of the most complex and important processes in nature, such as photosynthesis and water oxidation. An ultimate test of our knowledge of how metalloproteins work is to ...

Expertos en cáncer del Instituto de Investigación Van Andel en Grands Rapids, perteneciente a la Universidad de Michigan, en Estados Unidos, han ahondado en la comprensión de la reproducción de las ...

My intern can't stand Ms. Andrews and refuses to meet with her. He says I'll do all the communicating for the team and that I shouldn't be too nice to her so she won't split us. The attending says ...

Activation of MMPs in tissues is an important component of tissue injury. Based on earlier reports that (latent) proMMP-2 is incapable of forming a complex with TIMP-1, we reasoned that the ...

Parents compensate for a lazy partner by working harder to bring up their offspring, but not enough to completely make up for the lack of parenting, says research by bird biologists at the University ...

Investigadores del Centro de Investigación del Cáncer de Salamanca publican hoy en Embo Journal el hallazgo de un mecanismo molecular por el que los activadores naturales de la apoptosis inician la ...