Human Blood Reactivity on an Alien Species' Skin
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What would be a valid reason for human blood/sweat/body fluids being toxic/harmful/caustic to an alien species' skin?
What would the aliens' organic biochemistry be like and what would their DNA be based on for this to occur in a plausible way?
Any variable degree of reaction to the aliens' skin?
This post was sourced from https://worldbuilding.stackexchange.com/q/127004. It is licensed under CC BY-SA 4.0.
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