Gene Expression Market, By Product Type (Instruments (PCR Systems, Next-Generation Sequencing Systems, Microarray Scanners, etc.), Consumables and Reagents (Kits, Assays and Probes, DNA Chips etc.), and Software and Services), By Application (Drug Discovery and Development, Clinical Diagnostics, and Research and Development), By Technology (DNA Microarray, PCR-Based (qPCR, RT-PCR), RNA Sequencing (RNA-Seq), Northern Blotting, Next-Generation Sequencing (NGS), and Serial Analysis of Gene Expression (SAGE)), By Workflow Stage (Sample Collection and Preparation, RNA Isolation and Purification, cDNA Synthesis and Amplification, Detection and Quantification, and Data Analysis and Interpretation), By Sample Type (Human Samples, Animal Samples, and Microbial Samples), By End User (Academic and Research Institutes, Pharmaceutical and Biotechnology Companies, Contract Research Organizations (CROs), and Hospitals and Clinical Laboratories), By Geography (North America, Europe, Asia Pacific, Latin America, Middle East, and Africa)