Table 2.

ATP Content in Cultured Human Retinal Glia as a Function of Exogenous Substrate

	ATP (nanomoles/mg protein)
Substrate	−IAA	+IAA*
None	15.8	0.1
5 mM glucose	15.5	0.2
1 mM glutamine	15.4	0.2
1 mM glutamate	15.0	0.2
5 mM lactate	15.7	0.3
5 mM pyruvate	15.2	0.2

Each value represents an average of at least six individual experiments with triplicate culture dishes per experiment. Duration of incubation, 4 hours.

^*0.1 mM.