File:Protoporphyrin IX 2.svg
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![File:Protoporphyrin IX 2.svg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Protoporphyrin_IX_2.svg/448px-Protoporphyrin_IX_2.svg.png?20070428155059)
Size of this PNG preview of this SVG file: 448 × 320 pixels. Other resolutions: 320 × 229 pixels | 640 × 457 pixels | 1,024 × 731 pixels | 1,280 × 914 pixels | 2,560 × 1,829 pixels.
Original file (SVG file, nominally 448 × 320 pixels, file size: 35 KB)