The scientific branch, which studies and diagnoses the diseases on the cellular level, is referred to as cytopathology. Generally, cytopathology can be used on samples of free cells or tissue fragments, in contrast to the histopathology’s pathology branch that studies whole tissues. Typically, cytopathology is used to examine diseases affecting a broad variety of body locations, most often to help in the diagnosis of cancer, although it may also be used to diagnose other infectious diseases and inflammatory conditions.