The Histochemical Journal 1988-08-01

LR-White and LR-Gold resins for postembedding immunofluorescence staining of laminin in mouse kidney.

R Herken, M Fussek, S Barth, W Götz

Index: Histochem. J. 20(8) , 427-32, (1988)

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Abstract

This work describes a method for the immunolocalization of laminin on 1 micron-thick tissue sections using a postembedding immunofluorescence technique. Embedding of unfixed or formaldehyde-fixed mouse renal cortex in either of the acrylic resins LR-White or LR-Gold permitted reliable postembedding immunofluorescence staining for laminin. LR-White was heat-cured at 50 degrees C whereas LR-Gold was polymerized at -25 degrees C. A stronger immunostaining for laminin was obtained from tissue embedded in polymerized LR-Gold compared with the staining from tissue embedded in LR-White. Prerequisites for adequate postembedding immunostaining are the partial dehydration of the tissue (maximum ethanol concentration, 70%) and pepsin treatment of the tissue sections prior to performing the immunostaining reactions.

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