Suspension is essential in histology for several reasons: 1. Cell Isolation: It allows for the isolation of individual cells from tissue samples. 2. Homogenization: Ensures uniform distribution of cells, facilitating consistent and reliable microscopic analyses. 3. Staining: Enhances the efficacy of staining protocols, as the dispersed cells can uniformly interact with the staining agents. 4. Flow Cytometry: Crucial for techniques like flow cytometry, where cells in suspension are analyzed for various characteristics.