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  • Title: Automatic cell identification and enrichment in lung cancer. II. Acridine orange for cell sorting of sputum.
    Author: Tyrer HW, Golden JF, Vansickel MH, Echols CK, Frost JK, West SS, Pressman NJ, Albright CD, Adams LA, Gill GW.
    Journal: J Histochem Cytochem; 1979 Jan; 27(1):552-6. PubMed ID: 86576.
    Abstract:
    Fluorescence spectra were obtained from cells from sputum and pleural effusions stained with different fluorescent dyes and fixed by alternate methods. The spectra were referenced to a standard allowing for fluorescence comparisons of unstained and stained cells under various conditions. The metachromasia of acridine orange-stained cells offers nuclear/cytoplasmic differentiation in a single stain; mithramycin and propidium iodide do not. Unstained cells have an appreciable amount of green (546 nm) fluorescence, as does Carbowax in Saccomanno's preservative. Cytoplasm stained with acidine orange also has appreciable green fluorescence. Consequently, cells with much cytoplasm have high total fluorescence. Cytoplasmic fluorescence is negligible with mithramycin or propidium iodide. The metachromasia of acridine orange-stained cells is altered by alcohol and Carbowax levels in fixatives, keeping other factors constant.
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