IKZF2-degrader 2

Fluorescence activated cell sorting (FACS) is a special technology for identifying and separating rare cell populations with high purity.

Fluorescence-Activated Cell Sorting (FACS) separates cells in suspension after flow-cytometric measurement of light scatter and fluorescence; classic droplet-based instruments interrogate cells with a laser, convert optical signals into electronic signals, charge droplets containing target cells, and electrostatically deflect them into collection vessels. FACS detects phenotypes defined by fluorescent antibodies, fluorescent proteins, viability dyes, or intracellular markers, and the readout is the sorted fraction, purity, recovery, and post-sort viability of the gated population.

Cancer immunology studies how the immune system recognizes, suppresses, edits, or fails to eliminate malignant cells through tumor antigen release, antigen presentation, T-cell priming, immune trafficking, tumor-cell killing, and feedback inhibition in the tumor microenvironment. The cancer-immunity cycle links tumor antigenicity, dendritic-cell priming, CD8+ T-cell infiltration, cytotoxic function, and immune-checkpoint regulation to tumor rejection or immune escape. Immune-checkpoint pathways such as PD-1/PD-L1 and CTLA-4 suppress antitumor T-cell activity and can be therapeutically blocked, but many tumors remain resistant because of poor antigen presentation, weak T-cell infiltration, suppressive myeloid cells, regulatory T cells, and tumor-intrinsic immune-exclusion programs. Unresolved questions include which immune-cell states predict response, how tumor-intrinsic pathways exclude immune cells, how myeloid suppression limits checkpoint blockade, and which combination strategies