The amount of detail and precision the researchers have successfully achieved through the use of 3D printing techniques is absolutely astounding! As Cassidy and Suzanne have already stated, it is quite clear that the advancements in this field will have wide-spread impacts, particularly in the medical field. The technology itself is fascinating. In basic terms, it involves focusing a laser beam to harden liquid resin, which can occur anywhere within the resin using this new technology. Two photons must be absorbed in order for the resin to solidify, hence the name "two-photon lithography". The researchers have managed to speed up the process by a factor of 500 or in some cases 1000 times, primarily by improving the control mechanism for the mirrors used to focus the laser. This technology has uncapped potential, and in my opinion, we can probably expect to see this process making its way into real world applications quite soon, where formerly it was too inefficient to be deemed useful.