in order to determine the likely sources of lga-afcase and bpnase activity , we counted the number of granulocytes ( pmns ) , macrophages ( mns ) and activated fibroblasts in histologic sections of developing and healing sm lesions , and we measured the levels of these enzymes in serum , in culture fluids of pmn and mn peritoneal exudate cells , and in culture fluids of two fibroblast cell lines .
C0016030
fibroblasts
C0007634
cells