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Canada balsam

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Can·a·da bal·sam

a yellowish liquid resin from the balsam fir, Abies balsamea (family Pinaceae); contains kinene and bornyl acetate; used for mounting histologic specimens and as a cement for lenses.
Synonym(s): Canada turpentine
Farlex Partner Medical Dictionary © Farlex 2012

Canada balsam

a commonly used microscope slide mounting material for biological specimens. It is miscible with xylene.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Canada balsam 

A transparent resinous substance produced by the sap of the Canadian balsam fir and used to cement glass (doublet, beam-splitting prisms, the segment of a bifocal lens, etc). Its index of refraction is equal to about 1.54. It has nowadays been superseded by modern chemical adhesives.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
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References in periodicals archive
Nematode - the samples were fixed with a hot glycerin alcohol and were mounted with Canada balsam.
A method for mounting small insects on microscope slides in Canada balsam. Annals of the Entomological Society of America 61: 783-784.
Specimens were preserved in 70% ethanol, subsequently dissected and slide-mounted in Canada balsam using the techniques described by Wirth & Marston (1968), and identified by comparing them with slide-mounted specimens, photographs of female wings in the Neotropical Wing Atlas (Wirth et al.
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