Fig. 8
From: Differential activation of RAW 264.7 macrophages by size-segregated crystalline silica
TNF-α expression after 4-h exposure to four sizes of Crystalline Silica, showing that for a 4-h exposure period each particle size created a significant increase (p-value < = 0.005) in expression of TNF-α when compared to the negative control samples. In addition, both the UF and the S particles showed a statistically significant increase in expression of TNF-α when compared to both the C and R particles (p-value = 0.005). ** Significant difference from C exposure at p-value = 0.005