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.
When an Rh-negative woman becomes pregnant with an Rh-positive fetus (which can occur when the father's blood is Rh-positive), the pregnant woman's immune system makes antibodies that can destroy the fetus's blood in a future pregnancy.