3221218 PNML population-normalized mass loads 3 3221216 PNML Petri Net Markup Language 1 3221214 PNML Poly(N-methacryloyl-l-leucine) 1 3221217 PNML polymorphonuclear leukocyte migration 1 3221215 PNML Polymorphonuclear leukocytic 1 3221219 PNML potential neoplastic or malignant lesion 1