This event was orginally scheduled for February 16 at 12 Noon. Friday, February 23, 2007, 12:30 PM Boston University Physics Department Metcalf Science Center, Room 352 Joint Biophysics Condensed Matter Seminar "Nanoscale cell membrane fluctuations quantified by optical interfreometry" Gabriel Popescu MIT, G.R. Harrison Spectroscopy Laboratory Pizza served at 12 Noon