γ-PGA-APA (μg/ml) Citotoxicity (%) 700 58 ± 10.0 600 25 ± 4.3 500 9 ± 2.1 400 0 300 0 200 0

Table 2: Cytotoxicity percentage on PBMC cells 48-h post γ-PGA-APA treatment. Values are the mean of three experiments ± SD.