If you've mistakenly typed "ryh" instead of "rhyme", fret not! As far as spelling corrections go, here's a straightforward solution. The correct spelling is "rhyme". So, the simple fix is to replace "ryh" with "rhyme" to ensure accuracy.
RhRh blood group system is particularly important in pregnancy, as in some cases a woman who has Rh-negative blood may develop antibodies against Rh-positive blood, causing hemolytic disease of the newborn.