TABLE 5.

Concentration of various thiol amino acids in placental 1584-HF cells and 1584-LF cells¹

Thiol amino acids, μM	1584-HF cells	1584-LF cells
Homocysteine	31.9 ± 1.8	184.4 ± 1.5*
Cystathionine	19.4 ± 0.3	29.1 ± 0.3*
Cysteine	327.3 ± 5.2	481.2 ± 12.6*
Methionine	46.7 ± 1.3	69.2 ± 1.9*

¹Values are means ± SDs, n = 3 (means of triplicates). *Different from control (1584-HF cells), P < 0.05. HF, high folate; LF, low folate.