Zou, C C Plasma levels of matrix metalloproteinase-9 in Henoch-Schönlein purpura. [electronic resource] - Scandinavian journal of rheumatology - 52-5 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0300-9742 Standard No.: 10.1080/03009740510026940 doi Subjects--Topical Terms: Acute DiseaseChildConvalescenceEnzyme-Linked Immunosorbent AssayHumansIgA Vasculitis--bloodImmunohistochemistryLeukocytes--enzymologyMatrix Metalloproteinase 9--bloodReference Values