Remember the whole, “Scientists make sperm cell from stem cell” study published about a month back in Nature? Turns out, a portion of the introduction, the area where the scientist stakes their claim on why they did what did, was taken wholesale from another study published previously in another journal. So what does Nature do in response? They publicly retract it. This is why the scientific peer-review process is so important, to catch things like this. It’s not a great as, say, when Andrew Wakefield’s publication was retracted due to “strange” statistical means and gross misrepresentation of data, but it helps show the rigor of scientific means and what it takes to get published.

On a side note, the actual research is not in question and seems to hold water.