Table 2

Effect of several amino acids on Na⁺-independentl-glutamic acid uptake at 5 min by MBEC4 cells

Inhibitors	Percentage of Control for [³H]l-Glutamic Acid
Control	100 ± 10
2.5 mM l-Glutamic acid	4.01 ± 0.39^2-150
1 mMl-Cystine	6.01 ± 0.72^2-150
2.5 mMl-Aspartic acid	50.1 ± 2.0
2.5 mMl-α-Aminoadipic acid	4.07 ± 0.33^2-150
2.5 mMl-Homocysteic acid	6.93 ± 0.59^2-150
2.5 mMl-Quisqualic acid	3.91 ± 0.15^2-150
2.5 mMl-Leucine	146 ± 13
2.5 mMl-Arginine	115 ± 10

Each value represents the mean ± S.E.M. (n = 4–8).