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<DIV>I want to say thankyou, to John Kiernan and Geoff
McAuliffe, for your helpful information about the<FONT size=1>
</FONT>solution of Toluidine Blue.</DIV>
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<DIV>Thanks again,</DIV>
<DIV>Lina Vieira</DIV>
<DIV>Universidade do Algarve</DIV>
<DIV>Faro, Portugal</DIV></FONT></FONT></DIV></BODY></HTML>