Figure 6. Lung tissue inflammatory cytokine level in mice.

Lung tissue IL-1β and IL-6 levels 6 hours post-injection with carbon nanomaterials. There is no significant difference between all groups (except LPS). Lung-tissue cytokine levels were normalized to the total protein level determined using a BCA kit (Pierce, USA). n = 5, ***P = 0.0001 (lung tissue, IL-1β); n = 4, P = 0.0001 (lung tissue, IL-6), compared to the LPS group. NS, normal saline; PVA, polyvinyl alcohol; CNCs, carbon nanocapsules; C₆₀, C₆₀ fullerene; M, multi-walled carbon nanotubes; S, single-walled carbon nanotubes.