vivo 4dThe Osaki Vivo 4D + 2D Massage Chair is equipped with advanced dual mechanism 4D + 2D technology. This cutting-edge featuremicroscopy for in vivo 4D imaging of zebra fish heart beating Meng Zhang 1 , Renjian Li 1,2 , Songnian Fu 3 , Sunil Kumar 4 , James Mcginty 4 ,YuwenQin 3 and Lingling Chen 2