Table 2.

Absorbance values (570 nm) representing islet viability measured by MTT.

Encapsulated islets			Non-encapsulated islets
Normoxia	Hypoxia	Reduction by hypoxia (%)	Normoxia	Hypoxia	Reduction by hypoxia (%)
0.15 ± 0.02	0.10 ± 0.01*	33.8 ± 3.50	0.15 ± 0.02	0.09 ± 0.02*	42.9 ± 5.20

*P < 0.002 for the effect of hypoxia, P < 0.2 for the comparison of hypoxia-induced reduction of viability for encapsulated versus non-encapsulated islets. Data are mean ± SEM for 12 separate experiments (two-five parallels per condition), one-four experiments per donor (five donors).