Mapping of six epitopes on haemocyanin subunit Aa6 by immunoelectron microscopy

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Abstract
Monoclonal antibodies directed against the haemocyanin of the scorpion Androctonus australis were raised in order to map antigenic determinants (epitopes). The method of mapping employed in this study is molecular immunoelectron microscopy. It consists of a direct electron microscopic observation of antigenic molecules labelled with monoclonal antibodies. The epitopes are then localized in a small region of the external surface of the antigenic molecule whose architecture and quaternary structure are well known. Six monoclonal antibodies have been selected and epitopes have been circumscribed within a small area of one subunit among the 24 subunits composing the whole antigenic molecule.