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.
1 Derby shoe: the laces are tied to two pieces of leather independently attached to the vamp; also known as open lacing and is a step down in dressiness. 2  If the laces are not independently attached to the vamp, the shoe is known as a blucher shoe.3  This name is, in American English, often used about derbys. Platform shoe: shoe with very thick soles and heels. 2  Sandals: open shoes consisting of a sole and various straps, leaving much of the foot exposed to air. 3  They are thus popular for warm-weather wear, because they let the foot be cooler than a closed-toed shoe would.