Hancock II bioprosthesis for aortic valve replacement: the gold standard of bioprosthetic valves durability?
Hancock II bioprosthesis is a very durable valve in patients 60 years and older and is probably the gold standard of bioprosthetic valve durability in this patient population.
These results demonstrate that the achaete-scute complex genes specify aspects of neural precursor identity in the Drosophila CNS. Given the phylogenetically conserved function of these genes, our results raise the possibility that achaete-scute homologues may help specify neural precursor identity in other organisms.