For more information, take a look at these articles

http://stm.sciencemag.org/content/5/166/166ra1.abstract?sid=eeebb524-f51d-4df3-94aa-bbc6e699e476

Peter M. Kragh, et al. (2009). Hemizygous minipigs produced by random gene insertion and handmade cloning express the Alzheimer's disease causing dominant mutation APPsw. Transgenic Research.

Rolf Haugaard Nielsen. (2008). Klonede svin til kamp mod Alzheimer. 11, 32-37. Illustreret Videnskab.