Table 4. Cytotoxic Concentration 50 (CC₅₀) and Maximum Nontoxic Dose (MNTD₉₀) Values of CM of Rat Gut Bacteria^a.

sample/conditioned media	CC50	MNTD90
CM1	78.51	12.54
CM2	295.3	90.76
CM3	171.5	27.04
CM4	281.9	97.51

^aCC₅₀ = cytotoxic concentration. MNTD₉₀ = maximum nontoxic dose. CC₅₀ and MNTD₉₀ are the concentrations at which 50 and 90% cells survive.