Many of you will be happy to see that there is NO arthropod in this week's case. Instead I have something a bit unusual - some movies. These are short films of what you might see in a "hot stool" - that is, one that comes fresh from the patient without any fixative. This method is commonly used in the tropics for diagnosis. Furthermore, you're bound to see questions regarding characteristic motility on Board exams and the like, so it's good to be familiar with the classic patterns.
The first movie shows the classic motion. The second movie is to demonstrate morphology. The organism in question has finally slowed down enough to allow a closer look.
1. Identify the organism
2. State the significance of finding this organism in a stool sample.
Movie showing characteristic motion
Movie showing morphology