microchimerism
Noun
Meaning
microchimerism (usually uncountable, plural microchimerisms)
(biology) The presence of a small number of cells in an organism that are genetically different from those of the organism itself; typically transmitted between a mother and fetus
Examples
Microchimerism factors Microchimerism of fetal cells (offspring lymphoid cells in maternal circulation) may generate autoimmunity in women who have been previously pregnant.