\begin{overpic}[width=0.49\textwidth]{M4chr4b-039}
\put(1,74){\colorbox{white}{(\sublabel{M4chr4b-039}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20170908194131-763575}{M4chr4b-039}}}
%%(\subref{M4chr4b-039}) \href{M4chr4b-039}
\color{red}
\put(49.0,44.2){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20170908194126-621585}{spot of ys_chr_OK10VMa@20}} % 20170908194126-621585 % \vs(-838.4, -4671.3)
%%scale 10 micro meter
\put(1,1){\line(1,0){6.0}}
\end{overpic}