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Actually you can do a blood test with a simple pinprick. We did one in high school where we just pricked our finger and smeared it on a dish treated with certain chemicals that react to different types.
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"You IDIOTS! You've captured their STUNT doubles!" -from "Spaceballs"
"Where Science ends, magic begins." -Spiral, Uncanny X-Men #491
My various stories and fan-fics are now here-
https://m.fanfiction.net/u/4770494/#end
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