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Tag: "swarm" at biology news

Undergraduate research shows leaderless honeybee organizing

... and to the rest of the colony that it was time to swarm and leave the hive. Later, they were able to observe inside the swarm itself and see workers give the queen a signal, known as “piping” that tells her to fly. “Researc...

PNAS study reveals why organs fail following massive trauma

...rm the first line of defense against disease. They swarm to the injury to engulf and destroy bacteria with toxic molecules and biochemicals. Because these same molecules and chemicals are also toxic to nearby human cells, the innate response is normally shut down quickly by the onset of the more time-consu...

Solved: The mystery of flesh-eating bacteria's relentless attack

... most Strep infections, in which white blood cells swarm invading bacteria to clear them from the body, few white blood cells appeared at the M14 infection site. A similar phenomenon had been observed in patients with necrotizing fasciitis but did not receive sufficient attention at the time. "We knew t...

Honeybee decision-making ability rivals any department committee

...ound, the scouts signal to the waiting bees in the swarm that it's time to warm up their flight muscles in ...eoff. Each scout does so by scrambling through the swarm cluster and briefly pressing its vibrating thorax against the other bees to stimulate them to activa...

Scientists directly view immune cells interacting to avert autoimmunity

...ive autoreactive T cells, known as T helper cells, swarm around the dendritic cells where they are primed to attack the body's own tissue -- the cause of type 1 diabetes, arthritis and other autoimmune diseases. The scientists showed that Treg cells prevent this destructive response after they and the T h...

Ancient trans-Atlantic swarm brought locusts to the New World

...etween three and five million years ago, a massive swarm of locusts took off from the west coast of Africa ...y example of this phenomenon -- in October 1998, a swarm of desert locusts crossed the Atlantic, travelling from Africa to the Caribbean. Using muscle samp...

Locusts' built-in 'surface analysis' ability directs them to fly overland

...ientifically as Schistocerca gregaria, are able to swarm for great distances and in numbers measuring in th...ion of November 2004 in Israel, it appeared that a swarm came in an easterly direction over Sinai up to the Gulf of Eilat, then turned northward without cros...

Discovery of T-cell 'traffic control' boosts new drug promise

... "But we began to wonder why T cells don't always swarm into lymph nodes and flood on into blood vessels that lead to all parts of the body," Goetzl says. "We asked ourselves, 'What is the brake?'" In research with mice that have T cells that lack S1P receptors or have over-expressed receptors, the Goetz...

New Lab Research May Help Those Deafened By Immune System Attack

... from disease, destroying invading microbes with a swarm of attacking cells. But it can also go haywire for no apparent reason, ganging up on normal tissues in our body and wreaking havoc. In thousands of people each year, the immune system attacks the inner ear, home to the tiny, delicate structures that...

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