Time % viability (Mean [SD])
NC Coe-Pak extracts Reso-Pac extracts PC
Day 1 Day 3 Day 7 Day 1 Day 3 Day 7
24 h 100 (1.9) 61.5 (2.7) 5 (0.9) 3.8 (0.2) 85.6 (4.8) 93.4 (3.4) 71.4 (4.9) 4.4 (0.3)
72 h 100 (0.7) 65.8 (0.9) 3.1 (0.1) 3.2 (0.6) 90.5 (2.5) 92.7 (3) 73 (6) 3.9 (0.9)

SD = standard deviation; NC = negative control (regular culture medium alone; without extracts, no cytotoxicity, 100% viability); PC = positive control (cytotoxic, viability ≤ 10%).