He later uncovered evidence of prosecutorial misconduct and eyewitness misidentification. Depersonalization and derealization symptoms are usually manifested in patients exhibiting two misidentification delusions. This delusion is also classified as one of the delusional misidentification syndromes (DMS). There is potential for misidentification and mislabelling, particularly of prepared, frozen fish products. The phenomenon results from a misunderstanding and misidentification of intestinal artifacts expelled from the body. Capgras Syndrome and several other related disorders are referred to as delusional misidentification syndrome. Delusions such as mirrored-self misidentification can then develop. Serious adverse effects, even death, can result from misidentification or misuse of healing plants. Alleged sightings are suggested to be misidentification of known species. Recent misidentification of certain groups as "P'ent'ay" has caused confusion. Patients with impaired facial processing who do not have mirrored-self misidentification have prosopagnosia. Botanical misidentification of plants can cause toxic reactions in humans. According to John M. Duffey, the case was a misidentification of mental illness. Some Japanese zoologists believe that these reports "merely derive from misidentification of feral dogs". Franchitti's car was painted nearly identical to Tracy's, and caused some confusion/misidentification by announcers.