- American Society of Cytopathology
- International Society for Analytical Cytology
- An international association to further the study and development of cytological techniques and applications. Publishers of 4 professional journals: Cytometry, Part A., Cytometry, Part B., Case Studies in Clinical Flow Cytometry, Current Protocols in Cytometry.
- American Society for Cytotechnology
- Association for Laboratory Automation
- American Society for Cell Biology
- American Society for Colposcopy and Cervical Pathology
- Bethesda System Website Atlas
- This page includes images from conventional smears and liquid based preparations. It includes a self test.