Material Transfer Agreement

Stem Cell Sciences plc 01 February 2007 1 February 2007 Stem Cell Sciences signs Material Transfer Agreement and Option to License Novel Technology ("Stem Cell Sciences", "SCS" or "the Group") Stem Cell Sciences plc (AIM: STEM), the global biotechnology company focused on the commercialisation of stem cells and stem cell technologies in research and novel cell-based therapies, is pleased to announce that it has signed a Material Transfer Agreement ("MTA") and Option to License with AIM-listed Henderson Morley plc (AIM: HML). This agreement allows Stem Cell Sciences (SCS) to explore the use of Henderson Morley's (HM) novel L-particles and PREPS technology ("Technology") in the design of unique stem cell based assays. Stem cell based assays provide enormous benefit for discovering novel physiological processes, and are becoming an invaluable research tool for both academic & commercial research. Success from proof of concept studies will be followed by licensing of HM's Technology to SCS in a non-therapeutic field of stem cells. SCS will determine whether marked L-particles can be used in the design of reporter assays using stem cells being differentiated into more specified cell fates, such as neural, fat or bone cells. When successful, opportunities to create a range of relevant and useful assays with long term revenue potential may emerge. Being able to study normal physiology will be a major plus for the assays developed. Hugh Ilyine, VP & Chief Operating Officer of SCS plc commented: "SCS is a world leading supplier of stem cell based technologies for the research and bio-pharmaceutical industries. By adding to our stem cell a novel reporter gene expression technology we will continue the development of competitive biological discovery tools, and look forward to a fruitful working relationship with Henderson Morley". Andrew Knight, Chairman of Henderson Morley said: "We are pleased to announce our first potential license using PREPS and L-particles, and are excited to be working in this new ground breaking area with Stem Cell Sciences, a company which has an international reputation of excellence in the field. The possibility of modifying stem cells in a way that has not been possible to date will be an important scientific milestone. This could provide an exciting near term commercial opportunity for Henderson Morley, and we will continue to seek more licensing partners using PREPS and L-particles as both drug delivery vehicles and vaccine candidates." - Ends- For further information, please contact: Stem Cell Sciences plc Peter Mountford, President and CEO 0131 662 9829 Hugh Ilyine, Vice President and Chief Operating Officer Sue Furber, Director of Finance & Company Secretary Weber Shandwick Financial Louise Robson or James White 020 7067 0700 Notes to Editors PREPS and L-particles When grown in culture, alongside fully functioning viruses, herpes viruses produce virus-like particles that completely lack DNA- a discovery made and patented by the UK's Medical Research Council. These particles have normal surface proteins, so consequently are able to enter host cells in significant numbers as if they were a live virus. They are however totally unable to cause infection due to their complete lack of DNA. Due to the large genome of the parent virus, it is possible to engineer these particles to express, and thus deliver intracellularly, large non native proteins. Henderson Morley now own all of the patents regarding PREPS and L-particles, which cover all the major territories, and numerous papers regarding these particles have been published in prestigious journals demonstrating the validity of this approach. Following the recent licensing agreements of ICVT, Henderson Morley is now looking to commercialise PREPS and L-particles as vaccine candidates, protein delivery vectors, in-vitro reagents and as immuno-therapeutics against a wide range of targets. About Stem Cell Sciences plc Stem Cell Sciences plc (SCS, AIM: STEM) is a global biotechnology company, established in Melbourne, Australia in 1994, providing products in the burgeoning stem cell research and drug discovery markets, in addition to the targeted development of cell-based therapies for neurodegenerative disease and injury. The Company has established a leading intellectual property (IP) and technology portfolio that enables the commercial application of stem cells in drug discovery, providing the Company with early-stage revenue streams and technology development for at scale cell production of SCS cell-based therapeutics. SCS principal focus is in neurological disease. Revenues in the neurotech market, including pharmaceuticals, devices and diagnostics, grew 10% in 2005 to US$110 billion (Neurotech Insights, Volume 2/3 April 30 2006). SCS operates as a group of independent operations with laboratories in Scotland, Japan and Australia, each of which is affiliated with an academic centre of excellence. These include the Institute of Stem Cell Research (ISCR), Edinburgh, UK, RIKEN Centre for Development Biology, Kobe, Japan and the Australian Stem Cell Centre, Melbourne, Australia. SCS has four business units focused on key sustainable business strategies. SC Proven(R) provides cell culture media (liquid formulations) and reagents that enable the growth and differentiation of stem cells. The first commercially available product, a novel, serum free, stem cell growth medium, has been exclusively licensed for manufacture and marketing to Chemicon, part of Millipore Corporation. SC Licensing licenses SCS proprietary technologies, such as Internal Ribosome Entry Site (IRES) and Stem Cell Selection, for application in laboratory-based research and discovery. SCS has licensed technology to major pharmaceutical and biotechnology companies including Pfizer, Sanofi Aventis, GSK, Deltagen Inc and Lexicon Genetics Inc. SC Services provides specialised stem cell production for basic research and drug discovery, including high-throughput applications. SC Therapies' goal is to develop safe and effective cell-based therapies for currently incurable diseases. SCS is conducting preclinical evaluations of its neural stem cell lines in a number of therapeutic applications. The first preclinical programme being undertaken by SCS is in spinal cord injury repair. Its Japanese affiliate SCS KK will conduct preclinical studies for the treatment of Duchenne Muscular Dystrophy in 2007-8. For further information on the company please visit: www.stemcellsciences.com Henderson Morley plc Further information on Henderson Morley plc can be accessed through the Company's website at www.henderson-morley.com This information is provided by RNS The company news service from the London Stock Exchange

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