Figure 4

Agarose gel electrophoresis images of extracted samples for spheres made at various zein to DNA ratios (A): lane 1, ladder; lane 2, stock DNA; lane 3, 20:1 spheres; lane 4, 20:1 supernatant; lane 5, 40:1 spheres; lane 6, 40:1 supernatant; lane 7, 80:1 spheres; lane 8, 80:1 supernatant; lane 9, 160:1 spheres; lane 10, 160:1 supernatant; lane 11, 250:1 spheres; lane 12, 250:1 supernatant; lane 13, stock DNA; lane 14 ladder. Agarose gel image of DNA extracted from spheres (B) and supernatants (C) at various time points in the PBS release study: lane 1, ladder; lane 2, stock DNA; lane 3, 0 hr; lane 4, 1 hr; lane 5, 3 hr; lane 6, 6 hr; lane 7, 9 hr; lane 8, 12 hr; lane 9, 24 hr; lane 10, ladder; lane 11, 48 hr; lane 12, 72 hr; lane 13, 96 hr; lane 14, 120 hr; lane 15, 144 hr; lane 16, 168 hr; lane 17, stock DNA; lane 18, ladder. Agarose gel electrophoresis images of pDNA in DNase I degradation assay : lane 1, ladder; lane 2, stock DNA; lane 3, Naked DNA + DNase I; lane 4, 80:1 spheres + DNase I; lane 5, blank spheres (zein with no DNA); lane 6, 80:1 spheres ; lane 7, stock DNA; lane 8, ladder.