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Pàgina 1 des de 165 resultats
Haemangioblastoma: histological and immunohistological study of an enigmatic cerebellar tumour.
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Paraffin-embedded blocks of 36 cerebellar haemangioblastomas were reacted with a panel of antibodies including glial fibrillary acidic protein, vimentin, epithelial membrane antigen, cytokeratin, Factor VIII, a neuroendocrine marker and with Ulex europaeus. agglutinin The main histological features,
Adult-onset giant juxtaglomerular cell tumor of the kidney.
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The juxtaglomerular cell tumor (JGCT) of the kidney is a rare neoplasm which commonly secretes renin. This tumor often occurs in teenagers. This paper documents the 14th adult-onset (over 30-years-old) case with a giant JGCT which measured 9.0 x 8.0 x 7.5 cm. Histologically, this tumor was composed
Affinity of four lectins for endocervical and endometrial non-neoplastic and neoplastic glandular epithelium.
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OBJECTIVE
Endocervical and endometrial tissues were stained with four lectins to determine the difference in staining pattern between non-neoplastic and neoplastic conditions of these tissues.
RESULTS
The lectins used were Ulex europaeus agglutinin (UEA), Dolicho biflorus agglutinin (DBA).
Affinity cytochemistry of vascular endothelia in brain tumors by biotinylated Ulex europaeus type I lectin (UEA I).
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The vascularization of 50 tumors of the central nervous system (CNS) including 17 meningiomas, 25 neuroectodermal tumors, i.e., astrocytomas, oligodendrogliomas, mixed gliomas, glioblastomas, medulloblastomas, seven metastatic carcinomas, and one malignant hemangioendothelioma were investigated
Lectin binding to common epithelial tumors of the ovaries.
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Binding sites of peanut agglutinin (PNA), Ulex europaeus (UEA-1), wheat germ agglutinin, concanavalin A, and Ricinus communis were localized in 46 common epithelial ovarian tumors. Binding pattern of serous cystadenomas showed significant similarity with the pattern seen in the epithelium of
Lectin binding to normal, dysplastic, and neoplastic cervical epithelium.
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Avidin-biotin-peroxidase labeling technic was used to localize the binding sites of Concanavalin agglutinin (Con A), Ricinus communis (RCA-I), Ulex europaeus (UEA-I), and Limus flafus (LFA) in the cervical epithelia afflicted with condyloma (2 cases), moderate dysplasia (6), severe dysplasia (3),
Use of lectin histochemistry in pancreatic cancer.
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Lectin peroxidase histochemical analysis was carried out on pancreatic tissue from patients with pancreatic carcinoma and chronic pancreatitis and from subjects with normal pancreas to find a tumour specific pattern of lectin binding that would aid histological and cytological diagnosis. There were
Lectin staining of neoplastic and normal background colorectal mucosa in nonpolyposis and polyposis patients.
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A lectin histochemistry approach was adopted for comparative assessment of a colon cancer risk. Binding of Ulex europaeus agglutinin-I (UEA-I), peanut agglutinin (PNA), Griffonia simplicifolia agglutinin-II (GSA-II), and Dolichos biflorus agglutinin (DBA) was investigated in tumor and background
Sialylation and fucosylation of cancer-associated prostate specific antigen.
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OBJECTIVE
To examine sialylation and fucosylation of prostate cancer-associated prostate-specific antigen (PCa PSA) from localized prostate cancer and from metastatic prostate cancer, as relevant indicators of tumour stage-dependent microheterogeneity of its oligosaccharide chain.
METHODS
Sera and
Appearance of Ulex europaeus agglutinin-1 and Griffonia simplicifolia agglutinin-1 binding sites on cancer cells in sigmo-rectal polyps.
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Ninety-three polypectomized cases from the sigmo-rectal region were examined by lectin histochemistry. On the apical surface, the UEA-1 binding sites were positive in 24/29 carcinomas and in 25/62 adenomas; while the GSA-1 binding sites were positive in 16/29 carcinomas and in 0/62 adenomas. In 2
Comprehensive lectin histochemistry of normal and neoplastic human choroid plexus cells: alternation of lectin-binding patterns through neoplastic transformation.
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Lectin histochemistry of the normal and neoplastic human choroid plexus cells [six choroid plexus papillomas (CPPs) and three choroid plexus carcinomas (CPCs)] was performed using eight representative lectins to study the development of sugar chain structures and also to determine whether lectins
Regional differences in normal and cancer-associated glycoconjugates of the human colon.
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Because inherent regional differences in colonic epithelium may determine the biologic behavior of tumors originating from different sites, and inasmuch as colonic epithelial cells secrete mucins that may reflect the state of cell differentiation, colonic goblet cell mucin was analyzed with the use
Histochemically demonstrable changes in cell surface carbohydrates of human germ cell tumors.
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Cell surface carbohydrate chains of human germ cell tumors were investigated histochemically using peanut agglutinin (PNA), Dolichos biflorus agglutinin (DBA), Ulex europaeus agglutinin I (UEA-1), and anti-I-(Ma) antibody. Of 16 cases of embryonal carcinoma in adult testis, peanut agglutinin, a
Distribution of cellular carbohydrate moieties in human dysontogenetic brain tumors, especially in craniopharyngioma and epidermoid/dermoid.
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Cellular carbohydrate moieties of 65 human dysonotogenetic brain tumors (craniopharyngioma, epidermoid/dermoid, Rathke cleft cyst, germinoma and non-germinomatous germ-cell tumors) and 60 common brain tumors (glioma, meningioma, neurinoma and pituitary adenoma) were investigated histochemically
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
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