[Name] Gangliated Utrophin Immuno Latency Toxin (GUILT) [Source] Trauma Center: Under the Knife [Symptoms] 
A series of eight parasitic pathogens created by the medical-terrorist group Delphi. Despite its ingame introduction as a toxin, GUILT is referred as a "moving tumor", but behaves more like a parasite. During ingame sequences where the player operates on patients, GUILT diseases are normally shown as a pseudo-sentient core that attacks the patient from within, using lacerations, tumors and other ailments. Individual strains are named after Greek days of the week (Kyriaki, Deftera, Triti, Tetarti, Pempti, Paraskevi, Savato), the only exception being the eighth strain, called "Bliss". Neo-GUILT strains, which were developed independently from the original GUILT project, introduce four more strains (Nous, Bythos, Sige, Aletheia). Some GUILT survivors were also inflicted with a variation of the disease, dubbed the PGS (Post-GUILT syndrome).