Word: bacterias
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...easy one. Like any complex organic molecule, DNA degrades over time, and bones that lie in the ground for thousands of years become badly contaminated with the DNA of bacteria and fungi. Anyone who handles the fossils can also leave human DNA behind. After probing the remains of about 60 different Neanderthals out of the 400 or so known, Pääbo and his team found only two with viable material. Moreover, he estimates, only about 6% of the genetic material his team extracts from the bones turns out to be Neanderthal...
...first person got kind of like a rash,” said Austin D. McLeod ’09, a linebacker who himself contracted MRSA. “The second person got a rash and some bumps.” According to McLeod, as the bacteria spread to more players, the symptoms intensified. “The guy who had it before me got it on his calf and it sort of swelled up. I got it on my foot and it swelled up to the point where I couldn’t walk and I had to be hospitalized...
...There is no evidence that this was a food-borne illness,” he said Laboratory work eventually revealed the culprit to be the Norwalk virus, a gastrointestinal virus transmitted to students through contaminated salad bar food. HUDS removed eggs and pasta from the bar because of elevated bacteria levels, although those levels were not high enough to have caused the crisis, according to a Crimson report. Dartmouth College suffered a similar epidemic the week before Harvard did, suggesting a pre-Harvard source of contagion. At the time, Dartmouth turned down Harvard’s request for further information...
...When fresh spinach returns to the shelves, wash it thoroughly before eating. It's not as good as cooking when it comes to killing bacteria, but a good dousing with water will remove a lot of bugs clinging to the leaves...
...bacteria can routinely burrow into produce this way, that means that standards regulating ready-to-eat produce need to get even stricter. Potential sources of bacterial contamination, from animal droppings to improperly drained fields or unclean irrigation systems, should be monitored more tightly if the $2.6 billion prewashed salad industry is to survive. Already, some spinach farmers in California have plowed their spinach fields under, convinced that for the time being at least, no one will be eager to eat their greens...