Statement re Scisys plc

Microgen PLC
28 April 2008


NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, IN OR INTO
THE UNITED STATES OF AMERICA, CANADA, AUSTRALIA OR JAPAN OR ANY JURISDICTION
WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OF SUCH
JURISDICTION


28 April 2008

                           Microgen plc ('Microgen')

                   Statement regarding Scisys plc ('Scisys')

On 16 April 2008, Microgen announced that talks between Scisys and Microgen
regarding a possible offer for Scisys had terminated but that Microgen remained
interested in a combination of the two companies on the basis of the proposal
previously submitted to Scisys. Microgen has now notified Scisys that it is not
intending to revise its proposal regarding a possible offer for Scisys.

Microgen accordingly confirms that it has no present intention of making an
offer for Scisys.

Under Rule 2.8 of the City Code on Takeovers and Mergers, and except with the
consent of the Panel, the statement in the preceding paragraph will prevent
Microgen or anyone acting in concert with it from announcing an offer or
possible offer for Scisys or taking certain other action within the next six
months unless there is a material change of circumstances or there has occurred
an event which is specified as enabling the statement to be set aside.
Accordingly, for the purposes of Rule 2.8, Microgen reserves the right (on
behalf of itself and anyone acting in concert with it) to announce an offer or
possible offer for Scisys and/or to take any other action which would otherwise
be restricted under Rule 2.8 within the next six months in the event that:

(i)    the agreement or recommendation of the board of Scisys is given to the
       making of such an announcement or the taking of any such other action;

(ii)   a third party announces an offer for Scisys; or

(iii)  Scisys announces a 'whitewash proposal' or a 'reverse takeover' (each as
       defined in the Takeover Code).


Enquiries:

Microge plc                                     Tel: [phone]
Martyn Ratcliffe
Philip Wood

Arbuthnot Securities Limited                    Tel: [phone]
Tom Griffiths
Alasdair Younie

Financial Dynamics                              Tel: [phone]
Giles Sanderson
Haya Chelhot







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