Figure 3: Anti-MCV titers are higher in severe PsO patients treated with biological therapy than in moderate-to-severe psoriasis patients not requiring biological therapy. The plots show the antibody levels of investigated patients. The horizontal lines indicate the mean levels of anti-MCVs. *The PsO patients not requiring biological therapy had significantly lower anti-MCV levels than those treated with biological therapy (  U/mL versus  U/mL; ).