From the moment an embryo starts to take shape, two-way communication is critical for making sure tissues and organs develop ...

Excel processes the range (A1:A10) by converting it into an array in memory. This array is what Excel works with to calculate the sum. The distinction is subtle but important: while the range is the ...

Technical advances allow researchers to trace the genetic changes that occur over time. “There were some cells in there that were very messed up,” says Joe Luquette, who studies bioinformatics at ...

Human heart cells and tissues grown in the laboratory from stem cells promise to accelerate the development of drugs and treatments for heart disease, but they currently take weeks or months to grow.