Senior Scribe Neriah is the head of the biological research department of the Brotherhood of Steel, responsible for dissecting the bodies of the fallen foes, with the purpose to analyze potential weaknesses or special traits within them that the faction could use to their advantage. Recently, she is investigating how mole rats have developed a natural resistance to radiation, as part of a project to develop a special chemical compound that can be used to protect against most of the more heavily concentrated pockets of radiation in the Commonwealth, essentially an enhanced version of Rad-X.
The player can accept the miscellaneous quest Blood Bank from Neriah. Giving Neriah 20-25 viable blood samples after accepting the quest will cause her to give the player 6 X-111 compound and she will inform them that she can make more.
↑The Prydwen terminal entries: "My job is to oversee the dissection and study of anything the patrols bring aboard. I've always agreed with the notion that the quickest way to learn your enemy's weakness is by examining them from the inside out"