May I know the different if we measure the cytokine level using ELISA and protein expression (Western blot and RT-PCR)? Some of the journal measure both.
Selam Hanis. As already said it depends on what the purpose is. If the purpose is to quantitate the amount of protein, then ELISA is enough. But if there is interest to not only measure the amount of protein but also identify which cells expressed it then immunocytochemical/immunohistochemical staining followed by/without western blot for confirmation will be necessary. So depending on the purpose, the different techniques of ELISA, ICC/IHC, WB, RT-PCR... may appear in one research paper.