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MLS 108 Clinical Parasitology: Artifacts and Confusers

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MLS 108 Clinical Parasitology: Artifacts and Confusers

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Questions and Answers

What diagnostic structures are lacking in plant hair?

Definite cell wall and hairs

Cluster of odd-shaped vacuoles

Head and tail region

Buccal cavity, esophagus, intestine, or genital primordium (correct)

What do plant hair and helminth larvae have in common in terms of size and shape?

Plant hair is a type of helminth larvae

Plant hair is smaller than helminth larvae

Plant hair is larger than helminth larvae

Both have the same size and shape (correct)

Which artifact may range in diameter from 12 to 150 µm and resemble unfertilized Ascaris lumbricoides eggs?

Charcot-Leyden crystals

Hookworm egg

Plant material (correct)

Plant hair

What is typically the shape of plant material often rough in appearance?

Round to oval Signup and view all the answers

What do Charcot-Leyden crystals form from?

Eosinophil breakdown products Signup and view all the answers

Which artifact is reported when found in stool or sputum samples due to its clinical significance?

Charcot-Leyden crystals Signup and view all the answers

What is a distinguishing feature of Charcot-Leyden crystals compared to other artifacts?

Diamond-shaped appearance Signup and view all the answers

What does the absence of a definite cell wall distinguish plant material from?

Hookworm eggs Signup and view all the answers

What can be used to determine the presence of an unknown immune response when found in samples?

Charcot-Leyden crystals Signup and view all the answers

Which artifact resembles helminth eggs and contains hairs (pseudocilia) extending from its periphery?

Plant material Signup and view all the answers