A patient's sample is run on cellulose acetate, and two bands are found. The first band migrates to the A region on the gel. The second band migrates to the S-D-G region on the band. What is the next step to identify the second band?
a. Perform electrophoresis on citrate agar at pH 6.2
b. Perform an osmotic fragility test
c. Perform an acid elution test
d. Do a supravital stain for Heinz bodies
Correct Answer: A
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