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the study of cells, their origin, structure, function and pathology.
aspiration biopsy cytology (ABC)
the microscopic study of cells obtained from superficial or internal lesions by suction through a fine needle.
examination of cells obtained from a mucosal surface using a cytological brush.
microscopic examination of cells desquamated from a body surface or lesion as a means of detecting malignancy and microbiological changes, to measure hormonal levels, etc. Such cells may be obtained by such procedures as aspiration, washing, smear and scraping, and the technique may be applied to vaginal secretions, urine, abdominal fluid, prostatic secretion, etc.