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Congratulations to our latest award winners: Jean-Laurent Casanova has been recognized with the Stanley J. Korsmeyer Award for his work investigating the genetic basis of pediatric infectious diseases. The award is given by the American Society for Clinical Investigation, an honor society of phys...

When seeking to protect themselves from viruses, some bacteria use a seemingly risky strategy: They wait until the invading virus has already begun to replicate. Research at The Rockefeller University shows how the microbes use two newly identified enzymes to fight off an infection even after del...

Stem cells work throughout our lives as a sort of handyman, repairing damaged tissues and renewing some normal ones, like the skin we shed. Scientists have come to understand much about how stem cells function when we are adults, but less is known about where these stem cells come from to begin w...

Congratulations to our latest award winners: Luciano Marraffini has been recognized with the Hans Sigrist Prize for his work developing a new approach to fight antibiotic resistance. The Hans Sigrist Prize recognizes work in a different academic field each year based on a decision by a faculty co...

Since scientists have begun sequencing the genome of cancer cells, they have noticed a curious pattern. In many different types of cancers, there are cells in which a part of a chromosome looks like it has been pulverized, then put back together incorrectly, leading to multiple mutations. For yea...

Luciano Marraffini, assistant professor and head of the Laboratory of Bacteriology, has been recognized with the Hans Sigrist Prize for his work developing a new approach to combat antibiotic resistance. This Swiss award, bestowed by the University of Bern, specifically honors Marraffini for mani...

There are about 20,000 genes in the human genome, but not all are used in all cells at all times. At any given moment, a cell is converting only roughly half its genes into proteins. And of those active genes, about 75 percent are regulated by a process known as “RNA polymerase pausing.” This...

Some infectious diseases are particularly difficult to treat because of their ability to evade the immune system. One such illness, African sleeping sickness, is caused by the parasite Trypanosoma brucei, transmitted by the tsetse fly, and is fatal if left untreated. The trypanosome parasite is t...

For many living things, a roughly 24-hour internal clock governs the rhythms of life—everything from sleep in animals, to leaf opening in plants and reproduction in bread mold. Scientists have come to understand much about this internal time-keeping system, but one important aspect, its complex r...

Part of the reason people find smoking difficult to quit is that each time they have a cigarette, feelings of craving, irritability and anxiety melt away. This component of addiction is known as negative reward and is controlled in part by a region of the brain called the habenula. The neurotrans...