I believe that stem cells and clone cells are very different. The lab uses the stem cells to find a way to cure your health problem. The clone stem cell is to produce the same identified clone from the original mammal (warm-blooded as human and animal).
I don't remember if the clone were not successful due two sheep are not the same or missing something. Do you know what was the problem?
In fact, a mother wants to have a baby so a doctor implants a sperm in her womb. Isn't that a clone? (I read somewhere that a lab can let her to opt the color of eyes and color of hairs for her pre-born baby.)