Cartman discovers the benefits of stem-cell research.
Cartman discovers the benefits of stem-cell research.
Guest Cast
Matt Stone
voices Butters StotchTrey Parker
voices Randy MarshTrey Parker
voices Mr. GarrisonEliza Schneider
voices Sharon MarshTrey Parker
voices Mr. MackeyMatt Stone
voices Gerald BroflovskiMona Marshall
voices Sheila BroflovskiEliza Schneider
voices Liane CartmanCast Appearances
Trey Parker
voices Stan MarshMatt Stone
voices Kyle BroflovskiTrey Parker
voices Eric Theodore CartmanMatt Stone
voices Kenny McKormickEpisode Discussion
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