Table 1.

Plasma Levels of tHcy, Methionine, Cystathionine, Cysteine, and Glutathione, in Children with DS and in Controls

	Mean ± SD Plasma Level(μmol/liter)
Subjects	tHcy	Methionine	Cystathionine	Cysteine	Glutathione
Children with DS (n=42)	5.1 ± 1.1*	16.1 ± 3.3*	.7 ± .2*	233.5 ± 21.7*	6.9 ± 1.4*
Controls (n=36)	6.7 ± 1.6	30.6 ± 6.5	.2 ± .05	203.7 ± 20.0	8.0 ± 1.2

^*P<.001.