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 (film) triggered a nationwide panic. It also details how scientists views on sharks and the threat they posed to humans changed in the wake of the attacks. Blood in the Water (film) Blood in the Water is a television film that aired on the Discovery Channel in 2009. It was directed by Richard Bedser. It is based on a true-life series of shark attacks that became the inspiration for Peter Benchley's novel "Jaws". It was the season premiere of Shark Week on August 2 for the 2009 season. "Blood in the Water" tells the story of a series of shark attacks,