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C. 8. Untreated cells. 7. Human serum. 6. 5. 4. Luciferase activity (arbitrary unit). 3. 2. 1. 0. Untreated. ALK1 ecd. ALK2 ecd. ALK3 ecd. ALK6 ecd. sENG. Fig 1. A. B. BRE = Smad1/5. CAGA = Smad2/3. 5. 3. Untreated. Untreated. 4. TGF neutralizing antibody.
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C 8 Untreated cells 7 Human serum 6 5 4 Luciferase activity (arbitrary unit) 3 2 1 0 Untreated ALK1ecd ALK2ecd ALK3ecd ALK6ecd sENG Fig 1 A B BRE = Smad1/5 CAGA = Smad2/3 5 3 Untreated Untreated 4 TGF neutralizing antibody TGF neutralizing antibody 3 2 Luciferase activity (arbitrary unit) Luciferase activity (arbitrary unit) 2 1 1 0 0 Untreated Human serum Human serum (heat activated) TGFβ1 Untreated Human serum Human serum (heat activated) TGFβ1