| A | B |
|---|
| pluripotent | the ability to become any somatic cell except the placenta |
| totipotent | the ability to become any bodily cell |
| multipotent | the ability to specialize into only a certain type of cell, all having similar functions |
| blastocyst | contains an inner and outer cell mass which become the embryo and placenta |
| outer cell mass | forms the placenta, contains totipotent cells |
| inner cell mass | forms the embryo, contains pluripotent cells |
| existing stem cell lines | only stem cell research that is federally funded |
| immune rejection | when transplanted cells are attacked by the receiver's immune system |
| somatic cell | any cell in the body excluding sperm and egg cells |
| stem cell | unspecialized cell with the ability to divide indefinitely and become specialized |
