Once a sperm has broken through to an egg cell in order to fertilize it, the two cells need to hold together tightly. This occurs via a type of protein binding that is among the strongest in ...

Scientists based at the Wellcome Trust/Cancer Research UK Gurdon Institute, together with researchers from the Weizmann Institute of Science, have identified the transcription factor SOX17 as a key ...

Even though they are living, moving cells, why can't they become a single life form? —This is a question that touches on the ...

An egg cell and a sperm need to hold together tightly in the Fallopian tube in order to fuse, resulting in the creation of a new organism. One key part of this process involves the proteins Juno, on ...

U.S. researchers have found a way to coax human embryonic stem cells to turn into the types of cells that make eggs and sperm, shedding light on a stage of early human development that has not been ...

The raw material for each generation -- the pool of stem cells that gives rise to eggs and sperm -- also controls the rate of aging into adulthood, UCSF scientists have found in research on the ...

Add Yahoo as a preferred source to see more of our stories on Google. It's a commonly held belief: Sperm cells are like runners in an epic race, competing against each other for access to the coveted ...

Scientists have discovered a way to fertilise eggs made from the genetic material of human skin for the first time – potentially paving the way for people who currently rely on donor eggs and sperm to ...

Oregon scientists used human skin cells to create fertilizable eggs, a step in the quest to develop lab-grown eggs or sperm to one day help people conceive. But the experiment resulted in ...

I definitely memorized it yesterday, so why do I get it wrong on the test?'Have you ever felt that way when looking at your ...