Do you use real cancer cells from humans when the cancerous part gets removed or is it from animals or genetically

Do you use real cancer cells from humans when the cancerous part gets removed or is it from animals or genetically made? Is there ever shortage? Is there any restrictions with it ?

Posted on March 21, 2013 by in Question. Comments Off on Do you use real cancer cells from humans when the cancerous part gets removed or is it from animals or genetically