The irony of this is tragic:

Scientists in Newcastle claim to have created human sperm in the laboratory in what they say is a world first.

The researchers believe the work could eventually help men with fertility problems to father a child…

They began with stem cell lines derived from human embryos donated following IVF treatment.

The stem cells had been removed when the embryo was a few days old and were stored in tanks of liquid nitrogen.

The stem cells were brought to body temperature and put in a chemical mixture to encourage them to grow. They were “tagged” with a genetic marker which enabled the scientists to identify and separate so-called “germline” stem cells from which eggs and sperm are developed…

Professor Karim Nayernia at Newcastle University and the NorthEast England Stem Cell Institute says: “This is an important development as it will allow researchers to study in detail how sperm forms and lead to a better understanding of infertility in men – why it happens and what is causing it.

“This understanding could help us develop new ways to help couples suffering infertility so they can have a child which is genetically their own.”