rhesus-factor

US /ˈriː.səs ˌfæk.tɚ/
UK /ˈriː.səs ˌfæk.tɚ/
1.

yếu tố Rhesus

a substance in the red blood cells of most people that causes the production of antibodies in the blood:

:
People whose blood contains the rhesus factor are rhesus positive (Rh+) and those whose blood does not contain it are rhesus negative (Rh-).