Parasitology

Differentiating Hymenolepis nana and H. diminuta Eggs

Morphological differences between Hymenolepis nana and H. diminuta eggs: size, presence of polar filaments, and laboratory diagnosis of hymenolepiasis.

🔬Parasitology. Hymenolepis diminuta and Hymenolepis nana. What’s the difference?

✅You can see that they are very similar in appearance, but H. nana eggs are smaller and have polar filaments that originate from the inner membrane and extend into the space between the membranes (arrows in image №2). SIZES OF PARASITE EGGS in the largest dimension: 👉Hymenolepis nana 30-50 µm; 👉Hymenolepis diminuta 70-80 µm. ✅Both eggs have an inner membrane surrounding the oncosphere with six hooks, and an outer membrane. 💎Find even more useful parasitology materials in our LAB-TESTS library.