Add Yahoo as a preferred source to see more of our stories on Google. Composite of three mages from new microscope technology show a cell's replication machinery in green, already-replicated DNA is ...

A pregnant woman's blood sample taken in 1972 was mysteriously missing a surface molecule found on all other known red blood ...

Using a tiny, spherical glass lens sandwiched between two brass plates, the 17th-century Dutch microscopist Antonie van Leeuwenhoek was the first to officially describe red blood cells and sperm cells ...