Cytotechnologists examines under a miscrocope samples of human cells obtained from various body parts such as the female reproductive tract, the lung or gastrointestinal tract, assist in identifying cell abnormality and disease such as cancer or infectious agents under supervision, following the orders of the doctor of medicine. The abnormal cells are being transferred to the pathologist for medical diagnosis. They may also work under the supervision of a biomedical scientist. They do not treat patients or assist in medical treatments.