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Abstract
A new modification of the Snodgrass-Dorsey (1963) albumin embedding method is described. Formalin fixed brains of various ages of rhesus monkey (Macaca mulatta) were sunk in 10% phosphate buffered formalin which contained 30% sucrose. and then embedded in a 3% gelatin, 30% egg albumin solution which had been centrifuged to ensure uniformity. The albumin-gelatin was hardened in formaldehyde fumes and blocks cut frozen at 10-40 μm. Sections thus prepared can be handled easily and mounted without damage to the tissue. Modifications of conventional cell and fiber stains produce high quality finished slides in which the stained brain tissue is surrounded by a colorless albumin-gelatin matrix.
