*Boys! [Straight/bisexual/homosexual]: Your testicles produce atleast 1,500 sperm cells every second.
*Scientists genetically engineered mice so that their germline stem cells appeared fluorescent, allowing the team to watch the cells' development. (see "Chemistry Nobel Prize Awarded for Glowing Protein" Work for more.)
*scientists also "labeled" specific cells within the mouse germline stem cells a certain color and observed what happened to them over a period of several days.
*The research also revealed that sperm develop from a smaller subset of specialized germline stem cells in the testes than previously thought.
*What more? If germline stem cells stay stem cells for a long time and don't change into sperm cells, a man may be at risk of getting testicular cancer. But if germline stem cells too often develop into sperm, a man may become infertile.
source: Christine Dell'Amore from National Geographic News
*Scientists genetically engineered mice so that their germline stem cells appeared fluorescent, allowing the team to watch the cells' development. (see "Chemistry Nobel Prize Awarded for Glowing Protein" Work for more.)
*scientists also "labeled" specific cells within the mouse germline stem cells a certain color and observed what happened to them over a period of several days.
*The research also revealed that sperm develop from a smaller subset of specialized germline stem cells in the testes than previously thought.
*What more? If germline stem cells stay stem cells for a long time and don't change into sperm cells, a man may be at risk of getting testicular cancer. But if germline stem cells too often develop into sperm, a man may become infertile.
source: Christine Dell'Amore from National Geographic News
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