91色情片

By exposing living cells to forces up to 10 000 times greater than that of
gravity, centrifuges can make internal cell structures show up under polarised
light. However, standard microscopes cannot look at samples until they stop
spinning. Now researchers at the Marine Biological Laboratory in Woods Hole,
Massachusetts, along with Japanese companies Olympus Optical and Hamamatsu
Photonics, have developed a microscope that can view samples as they spin by
firing a synchronised laser pulse through a window in the centrifuge.