Rapid in situ cytochemical classification of CFU-C colonies in soft agar culture: permanent whole culture preparations.

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Abstract
Soft agar culture CFU-C (colony-forming units in culture) are rapidly classified in situ as eosinophil, macrophage, and neutrophil-monocyte types by whole culture staining with luxol fast blue for eosinophil specific granules and acetoorcein for nuclei. Stained colonies may be picked and examined individually as wet mount cover slip preparations, or the agar culture may be air dried and mounted permanently. The whole culture stain has been variously modified for the enzyme markers alpha-naphthyl acetate esterase and peroxidase and for nuclear staining alone with acetoorcein.

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