Analysis of the variability of human normal urine by 2D-GE reveals a “public” and a “private” proteome

► Variability of normal urinary proteome of 20 individuals rigorously analysed by 2D-GE. ► 23.6% of the proteome highly conserved (present in at least 90% of the samples). ► 13% of the protein spots represent the most variable part of the urinary proteome. ► Most of the conserved spots were of medium intensity. ► Public urinary proteome, common to healthy individuals and private urinary proteome.