fifth lateran council: the council in 1512-1517 that published disciplinary decrees and planned (but did not carry out) a crusade against Turkey
lateran council: any of five general councils of the Western Catholic Church that were held in the Lateran Palace
alpha fetoprotein: an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)