M-CSF induced mouse bone marrow derived macrophages (BMMs) were stimulated with 50 ng/mL mouse recombinant IFN-γ (A) in the absence or presence of PGE2 ± varying concentrations of TP-16 for 12 hr. The mRNA levels of selected M1 markers (Cxcl10 and Tnfa) were measured by q-PCR. Data are normalized to β-actin expression levels (n=3). 