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The following eggs possess an operculum (M56, 57-10; Level 2):

The Diphyllobothrium latum tapeworm can reach up to 10 meters in length and can have more than 3000 to 4000 proglottids. The definitive host and reservoir host, respectively, are (M53-4, 5, 10; Level 3):

The bradyzoite is the tissue cyst of:

A female presents with vaginal itching and UTI symptoms.  A urine culture was ordered as well as a wet prep of the vaginal fluid. The tech noticed quick darting, jerky motility on the wet prep.  What is the most likely identification?

During a very hot summer, a teenager went swimming and picnicking at a very small, shallow lake.  Later that evening, the teenager started to feel sick and complained of a headache and general malaise. The next morning, the teenager became very ill and was rushed to the emergency department. Many neurologic changes were noted. Despite the staff’s best efforts, the teenager died.  An autopsy revealed the presence of small protozoans in her brain tissue. What is the most probable organism that caused her death?

A beta-lactamase inhibitor (M10, 12-4, 5; Level 2):

Schistosoma japonicum may be found in the venules surrounding:

The examination of human feces is of least use in the detection of (M54-5, 10; Level 2):

A 10 year old child from a rural area in the southeast portion of the U.S. is experiencing abdominal pain and intestinal obstruction. The Ova & Parasite stool exam demonstrates an egg measuring approximately 55 x 45 um described as having a thick bile-staining mamillated outer layer. What is the most likely identification (M50-4, 10,11; Level 3)?

The following are the chronological life-cycle stages of the intestinal trematodes beginning with the passage of eggs from the body via feces (M55-5, 10; Level 2):