Fetus in fetu is a rare variety of parasitic twins, where the developmentally abnormal parasitic twin is completely encapsulated within the torso of the otherwise normally developed host twin.
In 2010, a team of US researchers concluded that the more peanuts a pregnant woman ate during her pregnancy, the more likely her newborn was to be sensitive to peanuts.
Fetal surgeries are a range of medical interventions performed in utero on the developing fetus of a pregnant woman to treat a number of congential abnormalities. The first documented fetal surgical procedure occurred in 1963 in Auckland, New Zealand when A. William Liley treated fetal hemolytic anemia, or Rh disease, with a blood transfusion.
In a clinical trial from 1969 to 1972, Sir Graham Collingwood Liggins and
Leonardo da Vinci’s embryological drawings of the fetus in the
Court: Supreme Court of Massachusetts
Citation: Dietrich v. Inhabitants of Northampton, 138 Mass. 14 (1884)
Status as current law: No longer good law
Value as precedent: None
Among his myriad scientific and artistic contributions, Leonardo da Vinci’s work in embryology was groundbreaking. He observed and diagramed the previously undemonstrated position of the fetus in the womb with detailed accompanying annotations of his observations.