MLPH and pemphigus foliaceus: Notably, the serum levels of PIIINP and HA in the PC19-PF patients were 1.6 times higher than those in the control group (Table 3; Figures 3, 4), and the serum levels of LN and IV COL were approximately 20% higher in the PC19-PF group than in the control group (Table 3; Figures 1, 2).