Among these genes, glutaminase 1 (GLS1) and glutamate dehydrogenase 1 (GLUD1) enzyme activity and protein expression were elevated, while glutamic oxaloacetic transaminase (GOT1 and GOT2), glutamate pyruvate transaminase 2 (GPT2), and glutamine synthase (GS) were unchanged during PoRVA infection (Fig 8A). Here, GLS is linked to infection.