%0 Journal Article %A K. Hada %A M. Kino %A A. Doi %A H. Nagai %A M. Honma %A K. Akiyama %A F. Tazaki %A R. Lico %A M. Giroletti %A G. Giovannini %A M. Orienti %A Y. Hagiwara %B ApJ %D 2016 %G eng %P 131 %R 10.3847/0004-637X/817/2/131 %T High-sensitivity 86 GHz (3.5 mm) VLBI Observations of M87: Deep Imaging of the Jet Base at a Resolution of 10 Schwarzschild Radii %V 817