A scientist who studies cells, their structure, function, and diseases using microscopes and laboratory techniques.
From Greek 'cyto-' (cell) + '-logy' (study) + '-ist' (one who practices). The term became standard in the early 1900s as cytology emerged as a formal scientific profession.
Cytologists often make the diagnosis that changes everything for a patient—a cancerous cell they spot under the microscope might be found before symptoms appear, turning a death sentence into a treatable disease.
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