. 2001 Oct;126(1):29–36. doi: 10.1046/j.1365-2249.2001.01639.x

Table 5.

Constitutive expression of cytokines by PF⁺ and PF⁻ CD4⁺ and CD8⁺ cells^†

	Cells expressing cytokines, %
	IL4		IFNγ
Cell populations	B-CLL	Controls	B-CLL	Controls
CD4⁺ PF⁺	20·8 ± 28·0	21·4 ± 20·2	0·7 ± 1·0^*	14·1 ± 6·6^*
CD4⁺ PF⁻	11·8 ± 20·6	0·9 ± 0·3	2·2 ± 4·0	0·5 ± 0·3
CD8⁺ PF⁺	9·0 ± 21·3	0·7 ± 0·5	9·5 ± 10·2	1·7 ± 1·2
CD8⁺ PF⁻	12·6 ± 10·3^‡	0·5 ± 0·6^‡	11·0 ± 12·4	1·1 ± 0·9

PBMC were stained for the surface expression of CD4 or CD8, fixed, permeabilized and stained for intracellular expression of PF and IL4 or IFN γ as described in the Methods. The values represent mean ± standard deviation.

^†

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

^‡

P < 0·05.