Dear Sir/Madam, I have some problem with SEM transformation of E.coli. They say this subject had been discussed on this newsgroup. Where I can find an archives of "bionet.molbio.methds-reagnts"? Thank you very much! Dm.Usoskin, postgrad student, Inst.of Cytology, RAS, St.Petersburg, Russia. usoskin at mail.cytspb.rssi.ru