Transcriptome analysis is a branch of molecular biology that focuses on studying and analyzing the complete set of RNA transcripts produced by the cells of an organism. This includes measuring the amount of different RNA molecules present in a sample, identifying which genes are being actively transcribed, and understanding how these transcripts are regulated and function within the cell. Transcriptome analysis is often used to study gene expression patterns, uncover regulatory mechanisms, and identify potential biomarkers or therapeutic targets for diseases. This analysis is typically done using techniques such as RNA sequencing, microarray analysis, and qPCR.