Computerized digital images consist of a ________ of picture elements, each with a video display value or gray shade.
a. row
b. matrix
c. column
d. pixel
b. matrix
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Which is true of the biphasic hemolysin usually associated with paroxysmal cold hemoglobinuria (PCH)?
a. Anti-P that binds to red blood cells at body temperature but activates complement at cool temperatures b. Anti-P that binds to red blood cells at cool temperatures but activates complement at body temperature c. Anti-P1 that binds to red blood cells at body temperature but activates complement at cool temperatures d. Anti-P1 that binds to red blood cells at cool temperatures but activates complement at body temperature
A 60-year-old patient visited his general practitioner because of fatigue and unexplained bruising. Physical examination revealed a frail, thin, pale man with widespread bruising
A CBC was ordered and revealed abnormal granularity of platelets and leukocytes. Red cells appeared dimorphic. Bone marrow analysis showed 20% ringed sideroblasts with dysplastic changes in RBC and WBC precursors. No cytogenetic abnormalities were detected. Based on this information, what is a probable diagnosis? a. Acute leukemia b. Chronic lymphocytic leukemia c. Myelodysplastic syndrome d. Myeloproliferative syndrome
When using the vacuum container method, it is important to use a(n) ________.
A. small vein B. large vein C. large artery D. arteriole
Which of the following would not immobilize a fractured arm?
A. cast B. splint C. stereotactic device D. bandage