Two women make a baby.

Death of the father: British scientists discover how to turn women's bone marrow into sperm
By FIONA MACRAE - More by this author » Last updated at 09:28am on 31st January 2008

British scientists are ready to turn female bone marrow into sperm, cutting men out of the process of creating life.

The breakthrough paves the way for lesbian couples to have children that are biologically their own.

Gay men could follow suit by using the technique to make eggs from male bone marrow.

Researchers at Newcastle upon Tyne University say their technique will help lead to new treatments for infertility.

But critics warn that it sidelines men and raises the prospect of babies being born through entirely artificial means.

The research centres around stem cells - the body's 'mother' cells which can turn into any other type of cell. 

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