chimerism
/kaɪˈmɛrɪzəm/
noun
- A biological condition in which an organism contains cells from two or more different individuals, often from a twin or a transplant.
- The patient's chimerism was discovered after a routine blood test showed two different DNA types.
- Some cases of chimerism occur when twins exchange cells in the womb.
- Doctors monitored the chimerism levels in the transplant recipient to see if the new organ was being accepted.