Effects of fibronectin and collagen on isolation of ECFC colonies.

<p>Fibronectin promoted the appearance of ECFC colonies earlier than collagen. (A) PBMCs from 9 donors were seeded on fibronectin-coated plates and PBMCs from other 9 donors were seeded on collagen-coated plates; ECFC colonies from PBMCs seeded on fibronectin (white bar) appeared earlier than those seeded on collagen (gray bar). p value calculated by the Mann-Whitney U-test. (B) PBMCs from 8 donors were divided into portions, with half of them seeded on fibronectin-coated plates and the rest seeded on collagen-coated plates; also in these paired experiments ECFC colonies from PBMCs seeded on fibronectin (white circles) appeared earlier than those seeded on collagen (gray circles). p value calculated by the Wilcoxon signed-rank test.