T4

T4 or T-4 is used for various purposes as a designation, abbreviation or identifier: T4 is the IATA code for Hellas Jet airline In endocrinology, see Thyroxine. In topology, see Normal space. The T4 phage is a bacteriophage. The T-4 Euthanasia Program was established by Nazi Germany in order to maintain the supposed purity (eugenics) of the so-called Aryan race by systematically killing children and adults born with physical deformities or suffering from mental illness. An aircraft, the Kaw ...