<unk>  is the study of abnormalities of physiological development in all organisms including plants during the entire life span. It is a sub-discipline in medical genetics which focuses on the classification of congenital abnormalities is dysmorphology. The related term developmental toxicity includes all manifestations of abnormal development that are caused by environmental insult. These may include growth retardation, delayed mental development or other congenital disorders without any structural malformations. Teratogens are substances that may cause birth defects via a toxic effect on an embryo or fetus. Known teratogens include: retinol, thalidomide, mercury, alcohol, lead, polychlorinated biphenyls (PCBs), and 2,3,7,8-tetrachlorodibenzodioxin.
Teratology
Obstetrics
Neonatology
Thanatology
Maternal–fetal medicine
Scientology and abortion
MedInfo
Embryology