Histology and cytology
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Orange II, C.I. 15510
Acid Orange 7, BSC certified stain. Used as a counterstain, as a substitute for Orange G.
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Orcein kit
Five-reagent kit for visualization of hepatitis B surface antigen (HBsAg) seen as viral inclusion bodies in hepatocytes, for elastic fibers and copper associated protein in tissue sections. It can be used with frozen sections.
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Orcein, C.I. (ed.1) 1242
Natural Red 28, Orcein Synthetic. For staining elastic tissues and viral inclusion bodies of the hepatitis B surface antigen.
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Oxalic acid, 1% solution
For use with Hematoxylin P.T.A., Masson Fontana, Orcein, Paraldehyde Fuchsin and Reticulin staining kits.