Dialysis blocks the passage of larger substances (for example, red blood cells, large proteins). This replicates the filtering process that takes place in the kidneys when the blood enters the kidneys and the larger substances are separated from the smaller ones in the glomerulus. The two main types of dialysis, hemodialysis and peritoneal dialysis, remove wastes and excess water from the blood in different ways. Hemodialysis removes wastes and water by circulating blood outside the body through an external filter, called a dialyzer, that contains a semipermeable membrane. The blood flows in one direction and the dialysate flows in the opposite.
Blood in the Water match Blood in the Water match The "Blood in the Water" match ( lit. "Blood bath of Melbourne"; ) was a water polo match between Hungary and the USSR at the 1956 Melbourne Olympics. The match took place on 6 December 1956 against the background of the 1956 Hungarian Revolution, and saw Hungary defeat the USSR 4–0. The name was coined after Hungarian player Ervin Zádor emerged during the last two minutes with blood pouring from above his eye after being punched by Soviet player Valentin Prokopov. Tensions were already high between the Hungarian and Soviet water polo teams, as the