Table 1.

The amino acid content (µmol/g) in malignant and normal tissues from patients with squamous cell carcinoma of the larynx.

	Means±SD		p-value
	Malignant tissue	Normal tissue
Glutamate	6.20±2.69	1.93±0.71	0.007§
Glycine	5.55±1.59	2.55±0.68	0.009§
Alanine	4.19±0.52	3.20±0.94	0.139
Aspartate	2.27±1.41	0.55±0.28	0.024*
Serine	1.43±0.31	0.87±0.38	0.012*
Proline	1.43±0.48	0.89±0.52	0.110
Valine	1.40±0.18	0.75±0.44	0.003§
Leucine	1.34±0.29	0.92±0.46	0.046
Lysine	1.23±0.53	0.85±0.36	0.109
Threonine	0.90±0.24	0.50±0.29	0.022*
Isoleucine	0.57±0.10	0.36±0.15	0.048
Phenylalanine	0.50±0.15	0.39±0.22	0.208
Tyrosine	0.32±0.09	0.21±0.09	0.118

SD: standard deviation ^*Power-test ≥70% ^§Power-test ≥90%.