Dear ALL, Please do not open my message which I intented to send to Dr. Wachniew in Cracov !!!!!!!!!!!!!!!!!!!!!!!!!!! I am very sorry for the mistake!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Stan ============================== Professor Dr. Stanislaw Halas Mass Spectrometry Laboratory Maria Curie - Sklodowska University 20-031 Lublin, POLAND tel: (48 81) 537 6275 fax: (48 81) 533 3669