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ADAM. "Black Widow Spider." 16 May 2007. HowStuffWorks.com. 20 November 2008. Definition This poisoning is from a bite by a black widow spider .
Very rare southern black widow spider bite in Michigan
Brad Gregory of Belding, MI was bitten by a southern black widow spider on September 7, 2008.
Spiders spin high performance fibers with diverse biological functions and mechanical properties. via Biochemistry