Fig. 4. (  A ) Representative Western blot analysis of free ubiquitin protein from rectus abdominis (S/RA) and vastus lateralis (S/VT) muscle in septic patients and in control patients (control). A main band was present in samples from S/RA and S/VT. (  B ) Muscle free ubiquitin expression quantified in control (n = 6) and septic (n = 16) patients. Because no difference was observed between RA and VT, these data were combined in both control and septic patients. *  P < 0.02.