(a).
| Experimental groups | The single cell layer stained with HBME-1 |
|---|---|
| PGA alone | + |
| Fibrin | ++ |
| SL | + |
| WL | ++ |
| NL | +++ |
HBME-1 stained the single cell layer covering the tissue surface facing the peritoneal cavity. The HBME-1 staining was scored as follows: +++: clearly stained; ++: stained; and +: unclear. The HBME-1 staining was poor on the surface over the lymph follicles in the fibrin group and over the PGA fibers in the PGA alone group.