A group of chimpanzees that were once used for hepatitis B vaccine experiments in laboratories have received health checks at their new home in Liberia, in hopes of giving them a second chance at a normal life.

The West African chimpanzees received checks ranging from teeth cleaning to X-rays and pedicures at the Humane World for Animals’ Second Chance Chimpanzee Refuge in central Liberia, said Liliana Pacheco Ricote, director of the sanctuary.