Histological identification of trematodes is primarily through the examination of their eggs in tissue sections. The eggs have distinct morphological features, such as shape, size, and the presence of spines, which help in species identification. For example, Schistosoma mansoni eggs have a characteristic lateral spine, whereas Schistosoma haematobium eggs feature a terminal spine. Staining techniques, like hematoxylin and eosin (H&E), enhance these features for better visualization.
