extremely significantp < 0.001
A slightly increased level occurred in the pcNcGRA1 group ( * p < 0.05); obviously upregulated levels existed in the pcNcGRA9, pcNcGRA14, and pcNcGRA23 groups ( ** p < 0.01); and an extremely significant increase occurred in the pcNcGRA4 and pcNcGRA17 groups ( *** p < 0.001).