Notification of voting rights transmitted by euro adhoc. The issuer is
  responsible for the content of this announcement.

Person/company obliged to make the notification:
Name:    Gebhard & Co. Wertpapierhandelsbank AG
Place:   Gräfelfing
State:   Germany

Company data:
Name:    curasan AG
Address: Lindigstrasse 4, 63801 Kleinostheim
Place:   Kleinostheim
State:   Deutschland

25.04.2007

On April 25, 2007, Gebhard Wertpapierhandelsbank AG, Gräfelfing, 
Germany, informed us according to article 21, section 1 WpHG that on 
April 24, 2007 due to a return of a loan of 575,000 shares their 
voting rights on curasan AG (ISIN DE 000 549 453 8 / WKN 549453), 
63801 Kleinostheim, Germany fell below the thresholds of 5 % and 3 % 
and amounted to 0 % (0 voting rights) on that day.

end of announcement                               euro adhoc 25.04.2007 18:22:02

Further inquiry note:

Branche: Biotechnology
ISIN: DE0005494538
WKN: 549453
Index: CDAX, Classic All Share, Prime All Share
Börsen: Frankfurter Wertpapierbörse / regulated dealing/prime
standard
Börse Berlin-Bremen / free trade
Hamburger Wertpapierbörse / free trade
Baden-Württembergische Wertpapierbörse / free trade
Börse Düsseldorf / free trade
Niedersächsische Börse zu Hannover / free trade
Bayerische Börse / free trade