Tumor Heterogeneity: scRNA-seq reveals the diverse cell types within a tumor, helping researchers understand the genetic and epigenetic landscape of cancer. Drug Resistance: Identifying resistant cell populations can guide the development of more effective therapies. Immune Environment: Characterizing the immune cells within the tumor microenvironment can aid in the design of immunotherapies. Cell Lineage: Tracing the lineage of cancer cells can provide insights into tumor evolution and metastasis.