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CSF, cerebrospinal fluid is presnt inside the ventricles of brain and in subarachnoid spaces of cranium and spine. Is a ultrafilterate of plasma. It performs the function like shock absprber, homeostatis, providing nutrition, immune function.
The counting of CSF is done using hemocytometer chamber to find WBC/Nucleated cell counted and RBC counted. After that a smear is made and is stained. In this stained slide 100 cells are counted and differentiated into cell types.
Normal findings include: