Medical News Today reports on progress in shrinking down replacements for dialysis technology: "Researchers have developed a human nephron filter (HNF) that would eventually make possible a continuously functioning, wearable or implantable artificial kidney. ... In the ideal RRT device, this technology would be used to mimic the function of natural kidneys, continuously operating, and based on individual patient needs. No dialysis solution would be used in the device. Operating 12 hours a day, seven days a week, the filtration rate of the HNF is double that of conventional hemodialysis administered three times a week." Nanoscale engineering is making a great many interesting concepts possible in the world of prosthetic replacement parts.