Figure 2.

Effects of soluble fibronectin or its proteolytic fragments on initial monocyte adhesion (A) and macrophage/FBGC adhesion (B). Freshly isolated monocytes or macrophages/FBGCs (day 3 to day 7) were treated with 0.05 mg/ml (solid bars), 0.1 mg/ml (shaded bars), or 0.25 mg/ml (open bars) of purified plasma fibronectin (FN), the 120-kd FN fragment, the 40-kd FN fragment, or human serum albumin as described in Materials and Methods. Results are expressed as the percent adhesion of untreated control cells, n = 3 monocyte donors.