Table 1.

Immunohistochemical stainings of fibroblasts. Fibroblasts isolated from normal heart tissue or from transplanted hearts undergoing rejection were grown on coverslips, fixed and stained. The slides were evaluated blindly according to a four-step scale depending on the percentage of cells staining positive for the various antibodies: + + + (100% positive), + + (75–99% positive), + (1–74% positive), – (0% positive). In parallel, the stain of the individual cell was judged as strong (+), weak (+/–) or negative (–). The table shows median values of three or four experiments

	Number of positive cells		Intensity
	Normal	Rejection	Normal	Rejection
CD44	++/+++	+++	+/–	+
IL-2 receptor	–	–	–	–
CD4	–	–	–	–
MHC class II	–	–	–	–
CD8	++	++	+/–	+/–
Vimentin	+++	+++	+	+