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Detection of the cancer-associated T antigen using an Arachis hypogaea agglutinin biosensor.

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An impedimetric biosensor was developed for the selective detection of the cancer-associated T antigen, using the lectin from Arachis hypogaea (peanut agglutinin, PNA) as the recognition element. The increase in the biosensor's impedance after sample incubation was indicative of lectin recognition

Lectin-binding sites in neoplastic and non-neoplastic colonic mucosa of 1,2-dimethylhydrazine-treated rats.

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Qualitative changes of glycoconjugates in luminal surface and goblet cell mucin from colon mucosa of 1,2-dimethylhydrazine (DMH)-treated rats were studied. Eight fluoresceinated lectins were used: Dolichos biflorus (DBA), Glycine max (SBA), Triticum vulgare (WGA), Limax flavus (LFA), Arachis

Regional distribution of glycoconjugates in normal, transitional and neoplastic human colonic mucosa. A histochemical study using lectins.

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Regional distribution of glycoconjugates in normal and neoplastic colonic mucosa was studied by means of eight lectins: Dolichos biflorus (DBA), Glycine max (SBA), Triticum vulgare (WGA), Arachis hypogaea (PNA), Griffonia simplicifolia-I (GS-I), Canavalia ensiformis (Con A), Limax flavus (LFA), and

Lectin binding sites in normal rat ovary and ENU-induced Sertoli cell tumors of the ovaries.

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A panel of seven fluorescein isothiocyanate (FITC) labeled lectins were used to study the distribution of specific binding sites in histologic sections of rat ovaries and ENU-induced Sertoli cell tumors (SCT) of the ovaries. Ten SCT and 5 normal ovaries derived from Berlin Druckey IV (BD-IV) rats

[Histochemical study of biotinylated lectins in prostatic cancer].

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We examined the staining pattern of various lectins in the malignant and benign prostatic tissues to clarify the difference of sugar residues of mucosubstances between them. The binding of different lectins (Concanavalia ensiformis [Con A], Triticum vulgaris [WAG], Ricinus communis [RCA-I], Arachis

Analysis of glycoconjugate patterns of normal and hormone-induced dysplastic Noble rat prostates, and an androgen-independent Noble rat prostate tumor, by lectin histochemistry and protein blotting.

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BACKGROUND Alteration of the expression of glycoconjugates is frequently observed in tumors. However, studies on the changes of cellular glycosylation in the early premalignant stage of prostate carcinogenesis are scarce. METHODS The present study characterized and compared the glycoconjugates

Differences in expression of oligosaccharide determinants by phenotypically distinct sublines of the Dunning 3327 rat prostate cancer.

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Oligosaccharides expressed by the 3327-H and 3327-MAT LyLu sublines of the Dunning rat prostate cancer model have been compared in formalin-fixed and routinely paraffin-embedded tumour tissues. Binding by lectins of defined specificity has been employed to identify expression of seven

Intermediate filament expression and lectin histochemical features of canine transmissible venereal tumour.

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Immunocharacterization of intermediate filament proteins and lectin-binding studies were carried out in canine transmissible venereal tumour (TVT), a unique neoplasia sharing some epidemiological features with Kaposi's sarcoma in humans. Neoplastic cells express vimentin, but neither cytokeratin nor

Immunohistochemical study of granular cell tumors of the neurohypophysis.

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Six granular cell tumors (GCT) of the neurohypophysis were studied by immunohistochemical techniques. They were all labeled by peanut lectin (Arachis hypogaea) and three showed reactivity for S-100 protein. Unlike extracranial GCT, neuron specific enolase (NSE), myelin basic protein (MBP) and

Lectin expression in carcinoid tumours of the gastrointestinal tract.

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The binding of peroxidase-conjugated Dolichos biflorus (DBA), Triticum vulgaris (WGA), Canavalia ensiformis (Con A), Arachis hypogaea (PNA), Lotus tetragonolobus, and Bandeiraea simplicifolia I (BSAI) to gastrointestinal carcinoid tumours was studied. The results indicate that carcinoid tumour cells

Identification of galectin-3 and mucin-type O-glycans in breast cancer and its metastasis to brain.

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Galectin-3 has been implicated in tumor progression. We demonstrated immunohistochemically that galectin-3 was negative in normal breast tissue, but it was highly increased in breast cancer and in metastatic tissues to brain. Similarly, histochemistry with mucin-specific lectins showed increased

Separation and biochemical characterization of blood group N antigen precursor glycoproteins with Thomsen-Friedenreich (T) activity, T-active glycoproteins and N antigen precursor glycoproteins from ascites of primary ovarian cancer patients.

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1. Three perchloric acid-soluble fractions from ascites of three primary ovarian cancer patients were subjected to Sephacryl S-300 gel filtration, respectively, and three Fr. 1 which were eluted in the vicinity of void volume as minor fractions, were then separated by a systematic affinity

Cerebral granular cell tumor: immunohistochemical and electron microscopic study.

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A rare intracerebral granular cell tumor (GCT) was studied by immunocytochemical and ultrastructural methods. The tumor was composed of two cell types--filament-rich and granular cells. Granular cells contained PAS-positive, diastase-resistant granules that ultrastructurally corresponded to

Lectin histochemistry of 1,2-dimethylhydrazine-induced rat colon neoplasia.

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Lectins linked to fluorescein were used as carbohydrate probes to examine the goblet cell mucin and epithelial cell surface glycoconjugate alterations in an experimental rodent model of colonic neoplasia induced with parenteral 1,2-dimethylhydrazine dihydrochloride. Lectins derived from Triticum

Lectin immunohistochemistry study of nasal inverted papilloma and associated neoplasms.

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BACKGROUND We aimed to investigate the tumor biology of nasal IP and identify the biological characteristics associated with early diagnosis and malignant transformation. METHODS Lectins immunohistochemistry were performed on inverted papilloma (IP), and associated neoplasms. IP synchronized with

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