Straumann holds 91 percent of the shares and votes in Biora and will initiate compulsory acquisition and seek de-listing

Straumann holds 91 percent of the shares and votes in Biora and will initiate compulsory acquisition and seek de-listing *Straumann's offer to the shareholders and warrant holders of Biora has been accepted to such extent that Straumann holds approximately 91 percent of the shares and votes in Biora. *Straumann will initiate compulsory acquisition in respect of the remaining shares in Biora and seek de-listing of Biora's shares from the Stockholm Exchange. Straumann Holding AG's offer, made through its wholly-owned subsidiary Institut Straumann AG, to the shareholders and warrant holders of Biora AB (publ) was during the initial acceptance period accepted to such extent that Straumann, when the offer was made unconditional through a press release on 26 May 2003, held 20,669,462 shares in Biora, representing approximately 87 percent of the total number of shares and votes in Biora, and 785,000 warrants in Biora, representing approximately 98 percent of the total number of warrants in Biora. All of these shares and warrants in Biora were acquired in the offer. During the extended acceptance period, which ended on 6 June 2003, Straumann acquired 673,195 shares in Biora, representing approximately 3 percent of the total number of shares and votes in Biora, and 15,000 warrants in Biora, representing approximately 2 percent of the total number of warrants in Biora, in the offer. During the extended acceptance period, Straumann also acquired 252,105 shares in Biora, representing approximately 1 percent of the total number of shares and votes in Biora, on the market. In total, Straumann holds 21,594,762 shares, representing approximately 91 percent of the total number of shares and votes in Biora, and all 800,000 warrants issued by Biora. Settlement in relation to shareholders and warrant holders who have accepted the offer during the extended acceptance period is expected to commence on or around 16 June 2003. Straumann will initiate compulsory acquisition to acquire the remaining shares in Biora. Further, de-listing of Biora's shares from the Stockholm Exchange will be sought. For further information please contact: Straumann Holding AG Gilbert Achermann, CEO Tel:(41) 61 965 11 11 Deutsche Bank AG London Mikael Mannik, Vice President Nordic Corporate Finance Tel: (44) 207 545 7261 This press announcement is a translation from the Swedish language. In the event of any discrepancy between the Swedish version and the English version, the Swedish version shall prevail. This press release may not be released, published or distributed, directly or indirectly, in or into the United States, Australia, Canada or Japan. This announcement does not constitute an offer or invitation to exchange or sell or an offer to exchange or purchase any securities. The Offer is not being made, directly or indirectly, in or into the United States of America, Canada, Australia or Japan, and it may not be accepted in or from the United States, Australia, Canada or Japan. Copies of this press release and any related materials are not being and should not be mailed or otherwise distributed or sent in or into the United States of America, Canada, Australia or Japan. The Offer is furthermore not directed to persons whose participation in the offering requires that further offer documents are issued or that registration or other measures are taken, other than those required under Swedish law. No document relating to the Offer may be distributed in or into any country where such distribution or offering requires any of the aforementioned measures to be taken or would be in conflict with any law or regulation of such a country. In the event of such distribution or offering still being made, an acceptance form sent from such a country may be disregarded. - ENDS - ------------------------------------------------------------ This information was brought to you by Waymaker http://www.waymaker.net The following files are available for download: http://www.waymaker.net/bitonline/2003/06/11/20030611BIT00020/wkr0001.doc http://www.waymaker.net/bitonline/2003/06/11/20030611BIT00020/wkr0002.pdf