HMWHA and LMWHA have different effects on the expression of CD44.

<p>PBMC were incubated in SFM, SFM with 300 µg/ml HMWHA, or SFM with 300 µg/ml LMWHA for 5 days. The PBMC were then fixed and stained for CD44. In all panels, nuclei are stained blue with DAPI and bars are 20 µm. Arrows indicate fibrocytes and arrowheads indicate non-fibrocyte cells. The figures represent one of 3 independent experiments.