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New Theory on How The Aggressive Egg Attracts Sperm | DiscoverMagazine.com
I believe, and my husband believes, and the lab believes, that they would have seen these results sooner if they hadn’t had these male- oriented images of sperm. In fact, biologists could have figured out a hundred years ago that sperm are weak forward-propulsion units, but it’s hard for men to accept the idea that sperm are best at escaping. The imagery you employ guides you to ask certain questions and to not ask certain others.
feminism  biology  gender  science  sexism 
2 days ago by ayamnotkambing
Hydrofluoric Acid Burns: Background, Pathophysiology, Epidemiology
Overview Background Hydrofluoric (HF) acid, one of the strongest inorganic acids, is used mainly for industrial purposes (eg, glass etching, metal cleaning,…
publishing  industrial  chemistry  medicine  health  pathology  epidemiology  biology  journal  research 
2 days ago by asaltydog
Why do eggs have so many shapes?
Not all eggs are shaped like a chicken's--now we know why
biology  data  eggs  science  visualisation  inspiration 
2 days ago by garrettc
Cordyceps even creepier than at first thought
Hughes’s team found that fungal cells infiltrate the ant’s entire body, including its head, but they leave its brain untouched. There are other parasites that manipulate their hosts without destroying their brains, says Kelly Weinersmith from Rice University. For example, one flatworm forms a carpet-like layer over the brain of the California killifish, leaving the brain intact while forcing the fish to behave erratically and draw the attention of birds—the flatworm’s next host. “But manipulation of ants by Ophiocordyceps is so exquisitely precise that it is perhaps surprising that the fungus doesn't invade the brain of its host,” Weinersmith says. [....]

So what we have here is a hostile takeover of a uniquely malevolent kind. Enemy forces invading a host’s body and using that body like a walkie-talkie to communicate with each other and influence the brain from afar. Hughes thinks the fungus might also exert more direct control over the ant’s muscles, literally controlling them “as a puppeteer controls as a marionette doll.” Once an infection is underway, he says, the neurons in the ant’s body—the ones that give its brain control over its muscles—start to die. Hughes suspects that the fungus takes over. It effectively cuts the ant’s limbs off from its brain and inserts itself in place, releasing chemicals that force the muscles there to contract. If this is right, then the ant ends its life as a prisoner in its own body. Its brain is still in the driver’s seat, but the fungus has the wheel.
biology  gross  cordyceps  fungi  fungus  ants  zombies  infection  brain  parasites 
3 days ago by jm

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