%% 
%%  A DANTE-Edition example
%% 
%%  Example 13-02-2 on page 150.
%% 
%%  Copyright (C) 2011 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}

\usepackage{pstricks,pst-node,graphicx}
\newsavebox\IBox

\begin{document}
\sbox\IBox{\includegraphics[scale=0.75]{figures/overlay50}}%
\begin{pspicture}(-2,0)(\wd\IBox,1.4\ht\IBox)
  \rput[lb](0,0){\usebox\IBox}
  \pnode(-0.5,0){A}\pnode(-0.5,\ht\IBox){B} \ncline{->}{A}{B}
  \ncput*[nrot=:U]{molecular weight}
  \pnode(0,1.05\ht\IBox){A}\pnode(\wd\IBox,1.05\ht\IBox){B}
  \rput[rC](-1,.3\ht\IBox){$13$db}
  \rput[rC](-1,.65\ht\IBox){$38$db}
  \rput[rC](-1,.8\ht\IBox){$76$db}
  \ncline{->}{A}{B}
  \ncput*{molecular weight in the complex}
  \rput[rC]{-90}(0.1\wd\IBox,1.1\ht\IBox){$-100$kDa}
  \rput[rC]{-90}(0.8\wd\IBox,1.1\ht\IBox){$-800$kDa}
  \psline[linewidth=0.1pt,arrowscale=2]{|-|}(4,1)(5,1)
  \uput[-90](4.5,1){1$\mu$m}
\end{pspicture}
\end{document}