Transcriptome analyses of unicellular and multicellular organisms have changed fundamental understanding of biological and pathological processes across multiple scientific disciplines. Over the past 15 years, studies of polymorphonuclear leukocyte (PMN or neutrophil) gene expression on a global scale have provided new insight into the molecular processes that promote resolution of infections in humans. Herein we present methods to analyze gene expression in human neutrophils using Affymetrix oligonucleotide microarrays and next-generation sequencing. Notably, the procedures utilize commercially available reagents and materials and thus represent a standardized approach for evaluating PMN transcript levels.
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