Figure 1.

Parasitological findings detected in 10-week-old Yorkshire terrier puppy suffering from Strongyloides stercoralis infection. Figure 1a: In the intestinal scrapings of the duodenum numerous adult small female nematodes (arrow), larvae and ova were found. Scale bar = 200 μm. Figure 1b: Adult parasitic female possesses long cylindrical oesophagus (oe) that occupies the anterior third of the body. Vulva (vu) and anus (an) are located in the posterior third of the body and the tail is narrowly tapered. Scale bar = 200 μm. Figure 1c: First stage larva of S. stercoralis. Genital primordium (gp) is very prominent. Scale bar = 50 μm. Figure 1d: The anterior end of a parasitic female S. stercoralis as observed under SEM. Hexagonal oral opening is surrounded by six well-defined lips. Scale bar = 2 μm.