Humster
A humster is a hybrid cell line made from a hamster oocyte fertilized with human sperm. It always consists of single cells, and cannot form a multi-cellular being. Humsters are usually destroyed before they divide into two cells; were they left alone to divide, they would still be unviable. Humsters are routinely created mainly for two reasons: Somatic cell hybrids between humans and hamsters or mice have been used for the mapping of various traits since at least the 1970s.