<body bgcolor="#FFFFFF"> Dear visitor. You are now entering 'layers and frames containing' web site. If you encounter difficulties obtaining the proper information you may either: - download a layer supporting browser - contact us directly for more information on gravitational biological / physiological research at: <A href="mailto:J.van_Loon.ocb.acta@med.vu.nl">DESC (e-mail)</A> or go to the <A href="Contact_us.htm" target="Main_Frame">'Contact Us'</A> page. </body>