\begin{overpic}[width=0.49\textwidth]{ys_dnd_CBK1a_50_BSE}
\put(1,74){\colorbox{white}{(\sublabel{ys_dnd_CBK1a_50_BSE}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20170517192743-740004}{ys_dnd_CBK1a_50_BSE}}}
%%(\subref{ys_dnd_CBK1a_50_BSE}) \href{ys_dnd_CBK1a_50_BSE}
\color{red}
\put(55.0,43.0){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20170510080425-999785}{spot of ys_dnd_CBK1a@43}} % 20170510080425-999785 % \vs(2036.6, -4618.8)
\put(50.4,44.1){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20170517192738-220086}{spot of ys_dnd_CBK1a@50}} % 20170517192738-220086 % \vs(2034.5, -4618.2)
%%scale 10 micro meter
\put(1,1){\line(1,0){22.0}}
\end{overpic}