\begin{overpic}[width=0.49\textwidth]{ys_vein_CBK1a_23_BSE}
\put(1,74){\colorbox{white}{(\sublabel{ys_vein_CBK1a_23_BSE}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20170629151129-505586}{ys_vein_CBK1a_23_BSE}}}
%%(\subref{ys_vein_CBK1a_23_BSE}) \href{ys_vein_CBK1a_23_BSE}
\color{red}
\put(48.8,41.6){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20170629151113-722843}{spot of ys_vein_CBK1a@23}} % 20170629151113-722843 % \vs(4331.9, -2532.5)
%%scale 10 micro meter
\put(1,1){\line(1,0){16.0}}
\end{overpic}