The venom blocks a chemical substance...

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Wyvern

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"Zombie" Roaches Lose Free Will Due to Wasp Venom
^^^ clicketh for the full article...

Mati Milstein in Be'ér Sheva, Israel
for National Geographic News
December 6, 2007


The parasitic jewel wasp uses a venom injected directly into a cockroach's brain to inhibit its victim's free will, scientists have discovered.
The venom blocks a chemical substance called octopamine in the cockroach's brain that controls its motivation to walk, the study found...



071206-roach-zombie_big.jpg
 
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