Staining a sample with deoxyribonucleic acid (DNA) dyes such as propidium iodide is done to determine cell:
a. Viability
b. Ploidy
c. Lineage
d. Chromosome number
ANS: A
Flow cytometry must be performed on viable cells; thus assessment of cell viability is routinely determined before analysis. Propidium iodide is a dye that stains DNA and permits this evaluation.
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