touch preparation


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touch preparation

1. The dabbing of a clinical specimen, e.g., the cut surface of an organ or tissue, onto a microscope slide to distribute a thin layer of cells for microscopic examination.
2. Any slide so obtained and prepared for pathological analysis.
See also: preparation
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Testing for CD30 was ordered in our case because on touch preparations the cells were large with reniform nuclei and a perinuclear vacuole.
The BM aspirate smears and touch preparations of the BM core biopsy had been routinely stained with Wright stain and for the presence of MPO, Sudan black B, [Alpha]-naphthyl acetate esterase, [Alpha]-naphthyl butyrate esterase, and chloroacetate esterase (Sigma Chemical Co, St Louis, Mo) according to kit procedures.
Touch preparations of the lung mass were Wright stained.