NAC and ox-LDL modulate cytokine mRNA levels. PHA-stimulated PBMC were treated with ox-LDL, NAC or their combination for 6 hr. Data represent values from one experiment representative of three performed considering different donors in which the same trend of values was observed. Lane M, 100 bp ladder; lane 1, control; lane 2, LDL; lane 3, ox-LDL; lane 4, NAC; lane 5, ox-LDL/NAC. GAPDH cDNA levels were equivalent in all cell samples analysed, as indicated.