Table 1.

Quantification of metabolite differences between left and right D1 blastomeres of the 8-cell Xenopus embryo.

Metabolite	Left/Right Fold Change*	p value	Extraction System
Spermidine	−28.88	0.0007	ApolarpH5
Creatine	−2.58	0.0012	ApolarpH5
Putrescine	−2.05	0.0171	ApolarpH5
Acetylcarnitine	−1.85	0.0021	ApolarpH5
SAM	−1.66	0.0006	PolarpH4
Ethanolamine	1.52	0.0098	ApolarpH5
Trolamine	1.99	0.0008	PolarpH4
Isoleucine	2.08	0.0232	ApolarpH5
Leucine	2.41	0.0296	ApolarpH5
GABA	2.97; 3.10	0.0124; 0.0072	ApolarpH8; ApolarpH5

^*Note: Negative fold change values indicate down-production and were calculated by inverting ratios lower than 1.