TABLE 1

Visual Uptake and Mean Colon Uptake Ratios of SPECT

Experimental protocol	Donor-acceptor*	No. of mice	Spleen cell type	Antibody	Visual uptake^†	Uptake ratio
1	NaCl–NaCl	5	Total	—	+	0.29 ± 0.03
1	TNBS–NaCl	5	Total	—	±	0.22 ± 0.04
1	NaCl–TNBS	5	Total	—	±	0.22 ± 0.04
1	TNBS–TNBS	6	Total	—	++	0.51 ± 0.03
2	NaCl–NaCl	2	CD4⁺	—	−	0.11
2	TNBS–NaCl	2	CD4⁺	—	±	0.25
2	NaCl–TNBS	3	CD4⁺	—	±	0.23
2	TNBS–TNBS	2	CD4⁺	—	+	1.18
3	TNBS–TNBS	5	CD4⁺	Control	++	0.72 ± 0.14
3	TNBS–TNBS	5	CD4⁺	Anti-α4	+	0.33 ± 0.03

↵* NaCl represents physiologic saline.
↵^† Radioactivity uptake: −, no uptake (equal to background); ±, equivocal uptake (higher than background but lower than bone marrow uptake); +, positive uptake (equal to bone marrow uptake); ++, manifest uptake (higher than bone marrow uptake).