Intravenous administration of a hypotonic solution or plain distilled water will also destroy red blood cells by causing them to fill with fluid until their membranes rupture. In a transfusion reaction or in erythroblastosis fetalis, incompatibility causes the red blood cells to clump together. The agglutinated cells become trapped in the smaller vessels and eventually disintegrate, releasing hemoglobin into the plasma.
For the skate brand of the same name, see Roller Derby (brand). Roller derby is a contact sport played by two teams of five members roller skating in the same direction around a track. Game play consists of a series of short match ups (jams) in which both teams designate a jammer who scores points by lapping members of the opposing team.
Derby is a small city, both in population and square footage. Home to the once-famous and now extinct Charlton Comics, plus a good high school football team. Apparently the name has nothing to do with horses and the area does not even have a race course. Maybe there is a hat thing involved. Derby is not a very prominent city and the only thing to talk about here is the small Metro rail station. It does have an Opera House which right now is serving as a Police Station (Probably a police station is more needed than an Opera house).