C/EBPβ immunocytochemistry of cultured murine BV-2 cell line.

C/EBPβ is increased both in numbers of immunopositive cells and in intensity of fluorescence in the nucleus of cells treated with (B) 1 µg/ml LPS as compared with (A) controls (scale bar = 10 µm). Some control cells were positive for C/EBPβ but the immunofluorescence was notably less intense. The average mean gray value of pixels in LPS treated cells (51.14±3.15, SEM) was significantly higher than the control (38.45±1.86, SEM) (P<0.05). Integrated density in LPS treated cells (6.87±0.42, SEM) was also significantly higher than the control (4.23±0.31, SEM) (P<0.01).