Portfolio Update

Intl. Biotechnology Trust PLC
04 June 2007





                     International Biotechnology Trust plc




The Board of International Biotechnology Trust plc announces that the top ten
holdings as at Thursday 31st May 2007 are:




Noven Pharmaceuticals Com                                                4.04
Gen Probe Com                                                            3.66
GTx Com                                                                  3.61
Barr Pharmaceuticals Com                                                 3.54
MGI Pharma Com                                                           3.39
Medimmune Com                                                            3.38
Progenics Pharmaceuticals                                                3.25
Acambis                                                                  3.21
Morphosys                                                                3.11
CSL                                                                      3.04







                             By Order of the Board

                     Schroder Investment Management Limited

                               Company Secretary






--------------------------------------------------------------------------------

Enquiries :

International Biotechnology Trust plc

Tina Watts 020 7658 3581


                      This information is provided by RNS
            The company news service from the London Stock Exchange