In the non-adult (embryo, fetus, neonate, juvenile, adolescent) this study is referred to as Developmental Immunotoxicology (commonly abbreviated as DIT). For most toxicants examined to date, the developing immune system exhibits a heightened sensitivity compared with that of an adult. For this reason, DIT screening has applications to human, animal and wildlife health protection. Immunotoxicological responses sometimes leads to extreme health conditions, as we know it is a immunodisfunction problem it becomes fatal. Different people give different type of response to a certain drug as it gets interacted with there immune system. Some people show hypersensitivity to a specific drug.