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…showed last 75 words of 542 total…are so toxic that .0000004 ounces may be enough to kill a human being. Toxins from these frogs work quickly, attacking the nerves and muscles. Nerve cells can no longer transmit impulses and muscle cells remain in an activated, contracted state. The result is death by respiratory or muscular paralysis). Scientists believe the reasons for poison-dart frogs not producing the toxins is due to some missing bacteria in there enviroment or something missing in their diet.