Evolution in the gut

Evolution and dietary habits interact and determine the composition of bacteria in the digestive tract. Many microorganisms in the intestine seem to have developed in sync with their host animals over millions of years.

How egg cells choose their best powerhouses to pass on

Developing egg cells conduct tests to select the healthiest of their energy-making machines to be passed to the next generation. A new study in fruit flies, published online May 15 in Nature, shows how the testing is done.

Cellular rivalry promotes healthy skin development

Not all cells are destined for greatness. Deemed unfit to serve in the body, some are killed off during early development through a process called cell competition. This phenomenon has previously been documented in flies ...

Overfed bacteria make people sick

Since the end of the Second World War, along with the growing prosperity and the associated changes in lifestyle, numerous new and civilisation-related disease patterns have developed in today's industrialised nations. Examples ...

Symbionts as lifesavers

When people fall ill from bacterial infection, the first priority is to treat the disease. But where do these pathogens come from, and how do they thrive in the environment before the infection occurs? An international team ...

Newly identified bacteria-killing protein needs vitamin A to work

People who have inadequate vitamin A in their diets are more susceptible to skin infection, yet how that vitamin affects skin immunity has been unclear. In a study published today, UT Southwestern researchers shed some light ...

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