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Table 1.

Inhibition of SDF-2 production upon addition of anti-TagC antibodies or ABC inhibitors

Additions	SDF-2 production
None	No
0.1 pM SDF-2	Yes
0.1 pM SDF-2 + anti TagC	No
10 nM GABA + anti TagC	No
0.1 pM SDF-2 + 2 mM vanadate	No
10 nM GABA + 2 mM vanadate	No
0.1 pM SDF-2 + 100 μM verapamil	No
10 nM GABA + 100 μM verapamil	No
0.1 pM SDF-2 + 200 μM corticosterone	No
10 nM GABA + 200 μM corticosterone	No

Additions	SDF-2 production
None	No
0.1 pM SDF-2	Yes
0.1 pM SDF-2 + anti TagC	No
10 nM GABA + anti TagC	No
0.1 pM SDF-2 + 2 mM vanadate	No
10 nM GABA + 2 mM vanadate	No
0.1 pM SDF-2 + 100 μM verapamil	No
10 nM GABA + 100 μM verapamil	No
0.1 pM SDF-2 + 200 μM corticosterone	No
10 nM GABA + 200 μM corticosterone	No

Developed KP cells were treated with the various compounds and the supernatants collected after 1 hour, serially diluted and added to test KP cells.

`Yes' indicates at least 5000 units of SDF-2 per 10³ cells; `No'indicates fewer than 10 units of SDF-2 per 10³ cells.

All experiments were repeated at least three times.