Immunolocalisation of TpFABP in T. pisiformis tapeworm and cysticercus. The yellowish-brown tint shows the TpFABP protein location. (A) negative sera in cysticercus; (B) antisera in cysticercus; (C) negative sera in adult tapeworm; (D) antisera in adult tapeworm. Arrows indicate the areas of the parasite: MT, microthrix; DC, distal cytoplasm; PC, perinuclear cytoplasm; GD, gathering duct; M, microtrichia; ICW, inside the layer of cystic wall; OCW, outer layer of cystic wall; MCW, middle layer of cystic wall. Scale bars: 20 μm.