University of Pennsylvania

New type of cell movement discovered

For decades, researchers have used petri dishes to study cell movement. These classic tissue culture tools, however, only permit two-dimensional movement, very different from the three-dimensional movements ...

Aug 28, 2014
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'Onion' vesicles for drug delivery developed

One of the defining features of cells is their membranes. Each cell's repository of DNA and protein-making machinery must be kept stable and secure from invaders and toxins. Scientists have attempted to replicate ...

Jun 10, 2014
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Owl monkeys don't cheat, study shows

True monogamy is rare in the animal kingdom. Even in species that appear to "mate for life," genetic maternity and paternity tests have revealed that philandering often takes place.

Mar 18, 2014
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