Figure 2.

Agglutination and lysis capacities of captive Gila monsters as a function of hydration state. Individuals had more robust (A) agglutination and (B) lysis scores as they dehydrated, with immune function decreasing to (for agglutination) and even beyond (for lysis) baseline samples post-drinking. Here, hydration state is defined as: hydrated (270–300 mOsm); moderately dehydrated (305–335 mOsm); severely dehydrated (340+ mOsm), 1 day post-drinking (285–295 mOsm); 2 days post-drinking (255–285 mOsm). Groups that share the same letter have LSMeans that are not statistically different (P > 0.05). Bars represent LSMeans, with error bars showing SE.