Table 4.

Mean fluorescence intensity (MFI) of the phenotypic markers studied on perforin-negative and perforin-positive CD4⁺ and CD8⁺ cells^†

	CD4+		CD8+
Cell markers MFI	PF+	PF−	PF+	PF−
CD28	78 ± 48	110 ± 29*	51 ± 30	66 ± 23*
CD57	110 ± 57	78 ± 32	158 ± 66‡	93 ± 43‡
CD69	40 ± 17	47 ± 21	52 ± 55	53 ± 41
HLA-DR	65 ± 42	70 ± 34	62 ± 42	62 ± 57
CD45RO	117 ± 69	100 ± 31	78 ± 56	99 ± 61
CD45RA	53 ± 9§	68 ± 16¶	138 ± 102§	134 ± 75¶
CD154	24 ± 12	22 ± 13	19 ± 16	26 ± 16

Cells were stained as described in the Methods.

^†Identical symbols are used for the comparison of each pair of the data.

^*Identical symbols are used for the comparison of each pair of the data.

^‡P < 0·01;

^§P < 0·01;

^¶P < 0·05.