I've seen dynamic memory work better with other guests though, so it might be either something I'm doing wrong, or a side effect of the File Server role. Either way, I've gotten better results with setting static amounts of RAM on my file/DFS servers.
A biological heart valve is a heart valve recovered from a donor or created from donor tissue. A cadaveric valve comes from a human donor. Bovine valves are recovered from cows and porcine valves come from pigs.
Mitroflow will allow US cardiac surgeons to use an innovative and clinically proven biological heart valve leading to excellent hemodynamic performance. Frankly, it is one of the easiest aortic heart valves I've ever implanted, said Dr Joseph E Bavaria, vice chief of cardiovascular surgery, Hospital of the University of Pennsylvania, Philadelphia, as quoted in the Sorin announcement.