Seventeen-year-old Brian has suffered with nonstop headaches for as long as he can remember. When he was 14, he was diagnosed with Lyme disease and treated, and although many symptoms improved, his headaches and overall fatigue did not. When his headaches worsened, he was sent for an extensive battery of blood tests. Signs and Symptoms When asked about other symptoms, Brian described a constant ringing in his ears and frequent red eyes that sometimes caused vision problems. Despite his ongoing physical problems, until recently he had been able to maintain high grades in school (although there were times when he needed to be tutored at home) and had achieved Eagle Scout status. Testing Blood smears were prepared and stained with Wright-Giemsa stain for a "differential" count of different types of white blood cells. The technologist who viewed the slide noted several purple-stained, crescent-shaped objects that appeared to be cells with a nucleus. Red blood cells are generally 7–8 µm in diameter. What is the approximate size of the cellular object in the blood smear?
Seventeen-year-old Brian has suffered with nonstop headaches for as long as he can remember. When he was 14, he was diagnosed with Lyme disease and treated, and although many symptoms improved, his headaches and overall fatigue did not. When his headaches worsened, he was sent for an extensive battery of blood tests.
Signs and Symptoms
When asked about other symptoms, Brian described a constant ringing in his ears and frequent red eyes that sometimes caused vision problems.
Despite his ongoing physical problems, until recently he had been able to maintain high grades in school (although there were times when he needed to be tutored at home) and had achieved Eagle Scout status.
Testing
Blood smears were prepared and stained with Wright-Giemsa stain for a "differential" count of different types of white blood cells. The technologist who viewed the slide noted several purple-stained, crescent-shaped objects that appeared to be cells with a nucleus.
Red blood cells are generally 7–8 µm in diameter. What is the approximate size of the cellular object in the blood smear?
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