Final answer:
Phagocytic cells, lymphocytes, and cells containing cytoplasmic granules require an immune response from IgSF.
Step-by-step explanation:
Four cell types that require an immune response from IgSF are:
- Phagocytic cells, which ingest pathogens to destroy them.
- Lymphocytes, which specifically coordinate the activities of adaptive immunity.
- Cells containing cytoplasmic granules, which help mediate immune responses against parasites.
These cell types rely on IgSF (the Immunoglobulin Superfamily) for cell surface recognition and communication with other immune cells.