If your blood doesn't have the protein,. Weboct 23, 2015 · some data indicate that rhd positive and rhd negative subjects differ in their tolerance to certain biological factors, including, toxoplasma infection, aging and. This prevents rh immunization in patients without pre.

Webjul 29, 2022 · rh factor is an inherited protein found on the surface of red blood cells. If your blood has the protein, you're rh positive.