In conclusion, our studies indicate that both male germ line stem cells and the supporting environment can retain full functional capability for long periods of time in the absence of normal ...

Mutations can be grouped into two main categories based on where they occur: somatic mutations and germ-line mutations. Somatic mutations take place in non-reproductive cells. Many kinds of ...

Where the law takes issue however, are any changes to “germ line” cells — those that could pass on edits to a future human. Namely, eggs or sperm. Recently, Canadian researchers, working ...