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[–]bug-in-recovery 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

...how do they know what the kill rate is..?

[–]DragonerneJesus is white 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

They did experiments on mice