Table 4. Spearman’s Correlation Coefficients for in vivo extracellular levels of vascular endothelial growth factor (VEGF) and dispensable amino acids, glucose and lactate in normal breast tissue, n = 38. Significantly different values are indicated in bold.

	Alanine	Aspartic acid	Asparagine	Glutamic acid	Serine	Glucose	Lactate
VEGF	0.40*	0.39*	0.58***	0.68***	0.50**	0.25	0.26

*P < 0.05, **P < 0.01, ***P < 0.001.