Table II.

CD103 levels reflect T cell clone antitumor cytolytic activity

	CD103 expression		% of lysis
	%	MFI	Medium	Anti-CD103
PBL
H32-22	3a		9b	7
H32-8	85	81	32	6
H32-25	72	119	49	21
TIL
Heu171	95	293	60	8

Immunofluorescence and cytotoxic activity of T cell clones. Data shown are representative of three independent experiments.

^aPercentages of CD103⁺ T cells and mean fluorescence intensities (MFIs) are indicated.

^bCytotoxicity toward autologous IGR-Heu tumor cell line was determined by a conventional 4 h ⁵¹Cr-release assay at a 20:1 E/T cell ratio.