We have already detected IL-6 and some other cytokines are increased in our mice bone marrow supernatant by multiplex immunoassays. Now we want to know which cells secrete IL-6. Many cells can secrete IL-6. We can sort out different types of bone marrow cells and detect the cytokine mRNA. But I am wondering that if we do a IHC or Immunofluorescence at first, will it be helpful in identify which cells have higher possibility through the morphology of positive cells or their localization in bone marrow?