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<body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td> </td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td valign="top" width="1%"> <p> </p> <p> </p> </td><td valign="top" width="24"></td><td valign="top"> <p>This page uses frames, but your browser doesn't support them. </td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td> <h5>Send mail to <a href="mailto:kb@membrane.com">kb@membrane.com</a> with questions or comments about this web site.<br> Copyright © 1999 Eye On Science<br> Last modified: November 28, 1999 </h5> </td></tr></table></body>