Macrophages are big, fuzzy-looking immune cells that move through the blood and tissues, engulfing and destroying any foreign invaders, such as bacteria and dead or damaged cells, they encounter. In July, Holger Kress and colleagues from the European ...
Although the immune system is constantly patrolling for foreign invaders, it attacks neither the bacteria in the gut nor those intestinal cells exposed to the bacteria. Researchers at Dana-Farber Cancer Institute this year announced that a previously ...
Darwinian natural selection is at work among the communities living in the Tibetan mountains, according to Case Western Reserve University anthropologist Cynthia Beall. She reported at the American Association of Physical Anthropologists meeting in ...
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