Sperm Cells from Embryonic Stem cells

[j_thomas]

Researchers at Newcastle University in England report they have coaxed
the first human sperm cells from embryonic stem cells, in a remarkable
demonstration of how quickly the field of stem-cell science is moving.

The achievement, described in the journal Stem Cells and Development,
comes just 11 years after the first human-embryonic-stem-cell line was
created — an eyeblink in scientific terms — in the lab of James
Thomson at the University of Wisconsin. (See the top 10 scientific
discoveries of 2008.)

http://www.biosolutions.info/2009/12/sperm-cells-from-embryonic-stem-cells.html