Related topics: cells · pregnancy · pregnant women

Why it is so hard for humans to have a baby?

New research by a scientist at the Milner Center for Evolution at the University of Bath suggests that "selfish chromosomes" explain why most human embryos die very early on. The study, published in PLoS Biology, explaining ...

Study: How placentas evolved in mammals

The fossil record tells us about ancient life through the preserved remains of body parts like bones, teeth and turtle shells. But how to study the history of soft tissues and organs, which can decay quickly, leaving little ...

Abortion and bioethics: Principles to guide US abortion debates

The U.S. Supreme Court will soon decide the fate of Roe v. Wade, the landmark 1973 decision that established the nationwide right to choose an abortion. If the court's decision hews close to the leaked draft opinion first ...

Pickled fetus found inside ancient Egyptian mummy

A team of researchers working on the Warsaw Mummy Project studying the Egyptian "Mysterious Lady" mummy has determined how a fetus was preserved in her womb for more than 2,000 years. The team discovered the fetus last summer ...

Researchers find genetic 'dial' can control body size in pigs

Researchers from North Carolina State University have demonstrated a connection between the expression of the HMGA2 gene and body size in pigs. The work further demonstrates the gene's importance in body size regulation across ...

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Fetus

A fetus (also spelled foetus or fœtus) is a developing mammal or other viviparous vertebrate, after the embryonic stage and before birth. The plural is fetuses. In humans, the fetal stage of prenatal development starts at the beginning of the 11th week in gestational age (the 9th week after fertilization).

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