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Ehrenfest classification
| Pure platelet-rich plasma (P-PRP) | Leukocyte-poor, low-density fibrin network |
| Leukocyte and platelet-rich plasma (L-PRP) | Contains leukocytes and low-density fibrin network |
| Pure platelet-rich fibrin (P-PRF) | Without leukocytes and high-density fibrin network |
| Leukocyte and platelet-rich fibrin (L-PRF) | Contains leukocytes and high-density fibrin network |
