extremely significantp < 0.01
LD 50 ENF caused extremely significant increase of GFAP protein content in serum of crucian carp ( p < 0.01), but the change of GFAP protein content in SD group was unstable, and the difference of GFAP protein content between the two groups was extremely significant ( p < 0.01). 3.4 Correlation analysis between ENR residues and serum S1