Figure 3. Analysis of cell viability using the MTT reduction test applied to 3T3, HeLa, HaCaT, V79, and A549 cells exposed for 24 h at 37 °C to biogenic silver nanoparticles (AgNP-T) in 96-well plates at a concentration of 2 × 10⁴ cells/well.

The dashed line represents the concentration of nanoparticles necessary to achieve 50% cell inhibition (IC₅₀).