A woman's body has been found to consist of varying proportions of male and female cells because of an extremely rare form of ...

Doctors in Brazil discover and confirm that a woman has blood with male chromosomes, a rare case of human chimerism.

I've long been a big fan of Greek mythology and all the wondrous beasts that tested, and sometimes bested, mythical heroes. One such creature was the chimera, a grotesque hybrid of a lion, goat, and ...

The monkey "chimera" with two sets of DNA at three days old. Some body parts appear tinted green, because the researchers marked the transplanted cells with fluorescent dye to trace what parts they ...

The yellow crazy ant, or Anoplolepis gracilipes, has the infamous distinction of being among the worst invasive species in the world. However, this is not the reason for which this particular ant is ...