To: Ying-Feng Daniel CHENG, Mb ChB Dept. Ophthalmology. Univ Abdn. Autoimmunity of Eye/Neurosystem Thanks a lot for answering. Could you spare a tiny small amount of your S2-4-C5 monoclonal? If so please let me know How much should it cost. Also, please Do you know Dr. Donosso's E-mail? Thanks Siham