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The experimental serum is a quest item in Fallout 4.


As its name suggests, it is an experimental serum created by Virgil during his time at the Institute, in order to counter the effects of the Forced Evolutionary Virus on a subject.


Located inside the FEV Lab, in the Bioscience department inside the Institute. It can be found inside a device on a desk under the board of lights, in the back of the room with the two super mutants in jars.

Related questEdit

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