Monocyte Breeder

Monocyte Breeder is a Fallout: New Vegas perk.

Requirements
This perk is not available during level up, but rather must be purchased. It's an implant named the PHOENIX Monocyte Breeder which may be purchased from Doctor Usanagi at the New Vegas Medical Clinic for 12,000 caps, through the use of an auto-doc. It is designed to gradually heal damage over time.

Effects
Regenerate 1 HP every 10 seconds. Having the Solar Powered and the Rad Child perk with this perk makes you have an inhuman healing factor, healing fatal wounds in mere seconds. Adding the rad regenaration perk will further your healing. Your limbs will take damage but will always heal. With all these perks you character becomes practically immortal.

Behind the Scenes

 * Monocytes are a form of white blood cell (leukocytes) which react to inflammation signals and differentiate into infection-fighting cells to protect the body from disease.
 * "Phoenix" is probably a reference to the Greek mythical firebird. Most accounts say that the bird was an immortal creature: at the time of death, it would ignite, burn to ashes, and be reborn from them.