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Angiogenesis of PCL/nHA+HPCH via macrophage secretion. (A) Angiogenesis related gene expression of RAW 264.7 treated with PCL/nHA and HPCH. (B) The bright-field images of tubule formation of ECs treated with extract medium from RAW 264.7 when cultured with PCL/nHA and HPCH. (C) Quantitation of tubule formation results.
