<x-flowed iso-8859-1>Dear fellow plant researchers, Our lab is trying to analyze ABA levels in Arabidopsis seedlings by an ELISA assay with the help of an ABA monoclonal antibody. If anyone knows a suitable method to extract ABA from frozen (-80=83C) seedlings, please email= to David.Brodmann at unibas.ch Many thanks in advance David --- </x-flowed>