juxtaposition (plural juxtapositions) 1  The nearness of objects with little or no delimiter. 2  The extra emphasis given to a comparison when the contrasted objects are close together.
Hemolytic disease of the newborn (HDN), also known as alloimmune HDN or erythroblastosis fetalis, is a potentially fatal alloimmune condition where fetal red blood cells are destroyed by transplacentally acquired maternal antibodies. RhD is the most common offending paternal antigen.
â¦well-known example of this is erythroblastosis fetalis, or hemolytic disease of the newborn, a disorder in which maternal antibodies destroy the childâs red blood cells during late pregnancy and shortly after birth. The most severe form of erythroblastosis fetalis is Rh hemolytic disease, which develops when: