Liz is currently working on projects that involve the health of rehabilitated and released orangutans at BOSF Nyaru Menteng and BOSF Batikap in Central Kalimantan, Borneo. These projects focus on their ability to obtain adequate dietary protein, the ways in which they recycle this protein in their bodies during periods of fruit scarcity, and their physiological responses to stress. In addition Liz is investigating the differences in immuno-responsiveness by measuring urinary cytokines and is also identifying gastro-intestinal parasites in both the rehabilitated and released populations. Using these biomarkers Liz will conduct a comparative study between the released orangutan population and the wild population at Tuanan studied by Dr. Erin Vogel.