the three vascular systems of different caliber size -- the intrapapillary capillary loops ( icl ) , the superficial arteriolar or venular plexus ( sap , svp ) and the small subcutaneous vessels -- were examined to investigate the characteristics of the vasculitis in mcls and differentiate it from infantile polyarteritis nodosa ( ipn ) .
C0489903
vascular
C0042520
venular