Final answer:
The incorrect statement is that stem cells in the umbilical cord are more likely to cause a graft-versus-host reaction; in fact, they are less likely to cause this reaction.
Step-by-step explanation:
The incorrect statement is B. Stem cells in the umbilical cord are much more likely to cause a graft-versus-host reaction. This is not true because stem cells from the umbilical cord are less likely to cause a graft-versus-host reaction when compared to other sources, such as those from a donor's bone marrow. Multipotent stem cells, like those found in the umbilical cord blood and deciduous teeth (baby teeth), are sometimes banked by parents for potential future medical use for their child. This is because these cells are less likely to be seen as foreign by the body and have therapeutic potential due to their ability to differentiate into various cell types, which include the generation of cells characteristic of all three germ layers when induced in a laboratory setting.