oblonski's Journal: Sperm made from bone marrow

In a BBC article http://news.bbc.co.uk/go/rss/-/2/hi/health/6547675.stm/ it is reported that new developments at a German research institution has seen scientists find a new way to develop spermatagonial cells from stem cells taken from the bone marrow tissue of male volunteers. From the BBC article: "The researchers from the Universities of Göttingen and Münster and the Medical School of Hannover isolated adult stem cells - cells that have the ability to become many types of tissue in the body - from bone marrow samples taken from male volunteers." The article continues: "Normally these stem cells from the bone marrow would develop into the different cell types in muscle tissue. But the researchers induced a small number of them to develop into what appeared to be spermatagonial cells - cells found in the testes which would normally develop into mature sperm cells. Scientists have grown artificial sperm precursor cells This is the first time human spermatagonial cells have been made artificially in this way."