But a state with two excellent universities has that - not two flagships. Flagship is a singular term - a good reference for the word generally can be found here. In this context, flagship means, as the introduction says, the leading comprehensive public research university in a given U.S. state.
During any pregnancy a small amount of the baby's blood can enter the mother's circulation. If the mother is Rh negative and the baby is Rh positive, the mother produces antibodies (including IgG) against the Rhesus D antigen on her baby's red blood cells.
You are referring to the RH factor which makes the blood type positive or negative. I'm not sure of the order if the mom's negative and the baby's positive blood type that could lead to issues. I think it's the mom being negative. So if thisi s the situation for you, they give you a shot of Rhogam and you're fine.