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Major peritubular cell secretory products
| Products | Functions |
|---|---|
| P-mod-S | Paracrine regulatory agent |
| Plasminogen activator inhibitor | Inhibition of plasminogen activator activity |
| Fibronectin | Extracellular matrix component |
| Collagen I | Extracellular matrix component |
| Proteoglycans | Extracellular matrix component |
| TGF-α | Growth stimulation/EGF-like |
| TGF-β | Growth inhibition |
| IGF-1 | Maintenance growth/differentiation |
TGF, transforming growth factor; IGF-1, insulin-like growth factor.
