Hugo Schiff

(redirected from PAS stain)
Also found in: Medical.

Schiff, Hugo

 

Born Apr. 26, 1834, in Frankfurt am Main; died Sept. 8, 1915, in Florence. Italian chemist. German by nationality.

A student of F. Wöhler, Schiff was a privatdocent at the University of Bern (1857). He later emigrated to Italy, where he worked in Florence from 1863 to 1876 and from 1879 to 1915. From 1876 to 1879 he was a professor at the University of Turin.

Schiff’s main works were devoted to organic chemistry. Schiff discovered the condensation reaction of aromatic amines with aldehydes (1864) and investigated the products of the reaction, which have come to be called Schiff bases. He synthesized populin (1868) and digallic, or tannic, acid (1873). He proposed qualitative reactions for aldehydes (with fuchsin sulfurous acid; called the Schiff reaction), urea, and pentosanes. Schiff invented the azotometer (or nitrometer), a device for determining nitrogen according to the method proposed by J. B. Dumas.

REFERENCE

“Hugo Schiff.” In the collection Berichte der Deutschen chemischen Gesellschaft, fasc. 48, vol. 2. Berlin, 1916. Pages 1566–67.
References in periodicals archive ?
In our case, there was definite invasion of the fungal bodies into the deeper layers of granulation tissue (figure 2), which was well seen on the PAS stain (figure 4).
Tenders are invited for Supply of Microbiology Laboratory Items Part-5:Kit Anti HCV Antibody,Malaria Antigen Testing Kit,Kit ASO kit for turbidometry machine,Kit for PAS Stain, 100 smears.
The PAS stain demonstrated moderate amounts of glycogen within the cytoplasm of the tumour cells.
Analysis of human erythrocyte membranes isolated by SDS-PAGE followed by PAS stain, revealed the presence of four SGPs and initially identified as PAS-1, PAS-2 and PAS-3 bands (Fairbanks et al.
uveitis systemic steroids PAS stain 1 -- No + 2 -- No + 3 + Yes + 4 -- Yes + 5 + Yes + 6 + Yes + 7 -- Yes + 8 + Yes + 9 NR NR ND 10 + Yes ND 11 + Yes ND 12 NR NR ND 13 -- No ND 14 -- No ND 15 -- Yes ND 16 + Yes ND 17 + Yes ND 18 + Yes ND 19 + Yes ND Patient.
Also the PAS stain was particularly useful when applied to whole mounts from Atlantic cod making it easier to identify the outline of small POFs compared to PVF that were less intensely stained.
A Congo red stain (for amyloid) was negative and a PAS stain (for mucin) was positive (Fig.
Cytoplasmic glycogen can often be detected by PAS stain or electron microscopy.
After one month of the primary operation, some brain tissue was taken out with a small elliptical incision under local anaesthesia for serial histological evaluation by Haematoxylin and Eosin stain, (10) PAS stain, (11) Van Gieson stain, (12) Gomori stain, (13) Giemsa stain, (14) etc.
PAS stain revealed numerous tangles of fungal hyphae, both in the necrotic areas (Fig.
After one to three months from the date of fetal tissue placement, some tissue was retrieved with a small elliptical incision under local anaesthesia (1 percent lignocaine) for serial histological evaluation by Haematoxylin and Eosin stain, PAS stain, Van Gieson, Reticulin stain.