Figure 2

Amino acid composition analysis of the head louse nits. The amino acid composition analysis was performed on the nits that are devoid of the embryos. The elution volumes and the areas under the amino acid peaks of the sample chromatogram were compared to that of the standards to determine the amino acid types and the relative mole percentage of the amino acids composing the nit. The contents of cysteine and tryptophan were undetermined due to the harsh HCl hydrolysis condition.