Table I:
Neutrophil Granule Contents
| Primary (Azurophilic) Granules | Secondary (Specific) Granules | Tertiary Granules |
|---|---|---|
| Myeloperoxidase | Lactoferrin | MMP9 |
| Neutrophil elastase | Cathelicidin | Arginase I |
| Cathepsin G and C | MMP8 | Ficolin I |
| Proteinase 3 | β2-microglobulin | Cytochrome b558 |
| Defensins | Haptoglobin | |
| CAP37 | Pentraxin-3 | |
| NSP4 | NGAL | |
| BPI | SLP | |
| Properdin | ||
| Cytochrome b558 (membrane-bound component of NADPH oxidase) |
Some of proteins are expressed in more than one granule subset. For example, lysozyme is expressed in primary, secondary, and tertiary granules.