IBA FINALIZES ACQUISITION OF CIS BIO INTERNATIONAL BY BUYING OUT THE IRE'S SHARES.

Embargo until 5:40 (Belgian time) – May 29, 2008

Louvain-la-Neuve and Fleurus, Belgium, May 29, 2008 – IBA (Ion Beam Applications S.A.: Reuters IBAB.BR and Bloomberg IBAB.BB) announced today that it has decided to exercise its option topurchase 80.1 percent of the indirect interest held by IRE (Institut National des Radioéléments,Fleurus, Belgium) in CIS bio International (CISBIO).

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