Diphylobothrium datum egg in Lugols iodine – note the prominent operculum, thickened cell wall at anterior end that can at times have a discernible knob – photo by W. Vientos
Diphylobothrium latum egg. Note the operculum and the knob located at the posterior. Image is under high power with oil immersion – Photo by W. VientosDiphylobothrium latum egg in formalin concentrate and stained with Luogol’s Iodine. The photo is taken under low power – Photo by W. Vientos