Luxol Fast Blue Combined With the Periodic Acid-Schiff Procedure for Cytological Staining of Kidney

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Abstract
Rat kidneys fixed in Regaud's fluid were stained by luxol fast blue (LFB), by the periodic acid-Schiff (PAS) method, and by LFB combined with PAS. When used separately the PAS stains the brush border, hyaline droplets and basement membranes reddish, the LFB stains the mitochondria, hyaline bodies and basement membranes greenish-blue. The combined LFB-PAS method stains the brush border reddish and the mitochondria dark blue, while the hyaline bodies and basement membranes are purplish colored. The LFB-PAS method provides color contrasts which show cytological features that are particularly significant in the kidney.