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Sperm Made From Human Skin Cells For The First Time

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Sperm engineered from human skin cells might offer hope to those men who suffer from infertility, according to a new study.

The study, published in the journal Cell Reports, found that after being implanted into the testes of mice, the samples generated into early-stage sperm cells. Scientists said that although "cell precursors" were insufficient to support conception, the breakthrough suggests that in future, the method could be used to grow fertile sperm from infertile men.

The trials, run by Stanford University, involved three men suffering from such defects. When their tissue samples were genetically engineered and then implanted into the testes of mice, cells were successfully generated. The findings indicate that Y chromosome infertility occurs relatively late in the maturing process of sperm cells.

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