Figure 5From: TAM receptor ligands in lupus: Protein S but not Gas6 levels reflect disease activity in systemic lupus erythematosusGas6 and free protein S levels and disease activity. Correlation between free protein S and (a) C3 or (b) C4. (c) Gas 6 and (d) free protein S levels in patients with BILAG hematology. BILAG, British Isles Lupus Assessment Group.Back to article page