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Stranica 1 iz 679 rezultatima
The Agar sandwich technique for retinal biopsy processing.
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BACKGROUND
The authors developed an agar sandwich technique for retinal biopsy processing. This tissue agar embedding technique allows for a rapid and reliable method to handle and transport retinal biopsies from the operative field to the histology laboratory.
METHODS
Biopsies from rabbit retinas
Arrested growth of Chinese hamster ovary (CHO) cell colonies on agar.
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Chinese hamster ovary (CHO) cells plated on agar form two classes of colonies; those which increase continuously in diameter and those which become arrested in outward growth. All colonies continue to increase in mass and thickness as demonstrated by computer-assisted analysis of time sequence
Immobilization of Aspergillus fumigatus colonies in a soft agar matrix allows visualization of A549 cell detachment and death.
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A model to examine the effects of proliferating Aspergillus fumigatus ATCC 26933 colonies embedded in a thin layer of soft agar on a monolayer of A549 cells was developed and enabled an investigation of the response of cultured cells to fungal growth. This model simulates the conditions on the
Effects of extracellular matrix proteins on macrophage differentiation, growth, and function: comparison of liquid and agar culture systems.
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Both spaceflight and skeletal unloading suppress the haematopoietic differentiation of macrophages (Sonnenfeld et al., Aviat. Space Environ. Med., 61:648-653, 1990; Armstrong et al., J. Appl. Physiol., 75:2734-2739, 1993). The mechanism behind this reduction in haematopoiesis has yet to be
The comparative effects of tumor necrosis factor on tumor cells growing anchorage dependently and independently.
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Tumor necrosis factor (TNF) is a macrophage-derived cytokine that has been shown to exert differential cytotoxic and/or cytostatic effects on many human and animal tumor cells. In vitro assays of TNF effects have been performed mainly on cultured tumor cells growing as a monolayer. However, tumor
Development of a rapid immunochromatographic strip test for the detection of Vibrio parahaemolyticus toxin B that cause acute hepatopancreatic necrosis disease.
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Here, two monoclonal antibodies (MAbs) specific to different epitopes on ToxB, a toxin produced by Vibrio parahaemolyticus that causes acute hepatopancreatic necrosis disease (VPAHPND ), were employed to develop a rapid strip test. One MAb was conjugated to colloidal gold to bind to ToxB
Human recombinant alpha- and gamma-interferons enhance the cytotoxic properties of tumor necrosis factor on human melanoma.
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Three short-term human melanoma cell lines were tested for sensitivity to human recombinant alpha-tumor necrosis factor (TNF) in a semisolid agar colony formation assay. Cells from three pigmented and one amelanotic strain displayed low sensitivity to TNF. The ID50 for the inhibition of melanoma
Role of tumor necrosis factor alpha in innate resistance to mouse pulmonary infection with Pseudomonas aeruginosa.
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In the present study, we have investigated the mechanisms underlying mouse resistance to endobronchial infection with Pseudomonas aeruginosa enmeshed in agar beads. This was done by monitoring macrophage activation-associated gene expression in lung and alveolar cells harvested from resistant
Immortalized fibroblasts from NF-kappaB RelA knockout mice show phenotypic heterogeneity and maintain increased sensitivity to tumor necrosis factor alpha after transformation by v-Ras.
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Activation of the NF-kappaB pathway can either promote or block apoptosis and oncogenesis in different cell types and circumstances. In this report, we show that independently derived immortalized mouse embryonic fibroblast cell lines prepared from RelA knockout mice have different phenotypes, based
Morphological and molecular analysis of Fusarium lateritium, the cause of gray necrosis of hazelnut fruit in Italy.
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Fusarium lateritium is a globally distributed plant pathogen. It was recently reported as the causal agent of nut gray necrosis (NGN) on hazelnut. Isolate characterization within F. lateritium was undertaken to investigate how morphological and molecular diversity was associated with host and
The effect of tumor necrosis factor on normal human hematopoietic progenitors.
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Tumor necrosis factor-alpha (TNF-alpha), a product of activated macrophages that is cytotoxic to tumor cells, could be used to purge tumor cells from bone marrow before autologous bone marrow transplantation for hematologic malignancies and/or solid tumors. To determine whether exposure to TNF-alpha
Pseudomonas corrugata Causing Pith Necrosis on Tomato Plants in Baja California Sur, México.
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Fresh market tomato (Lycopersicon esculentum Mill.) cultivars are grown in field and greenhouse areas in Baja California Sur from October to June for international markets. During March and April 2001, field-grown tomato plants showing external necrotic stem lesions and hollowed necrotic pith were
Opposite effect of tumor necrosis factor alpha on granulocyte colony-stimulating factor and granulocyte-macrophage colony-stimulating factor-dependent growth of normal and leukemic hemopoietic progenitors.
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The effect of recombinant human tumor necrosis factor alpha (TNF-alpha) on normal and chronic myeloid leukemia granulocyte-macrophage progenitors (CFU-GM) growing in semisolid agar cultures in the presence of recombinant granulocyte colony-stimulating factor and granulocyte-macrophage
Mode of interaction between tumor necrosis factor alpha and a monoclonal antibody expressing a recurrent idiotype.
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Tumor Necrosis Factor alpha (TNF alpha) is an inflammatory cytokine which exists mainly as a 51kD complex built up of 3 identical, noncovalently-linked polypeptide subunits. We have raised monoclonal antibodies (mAb) against human TNF alpha (huTNF alpha). One of these mAb (mAb78, mouse IgG1k) was
Short- and long-term synergistic effects of human tumor necrosis factor and interferon-gamma on A549 human lung cancer cells maintained in three-dimensional culture.
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We have studied the short- and long-term effects of human recombinant tumor necrosis factor (TNF) and TNF/recombinant human interferon-gamma (IFN-gamma) mixtures on A549 human lung carcinoma cells maintained in organotypic culture. Continuous treatments with 2 x 10; 2 x 10(2); 2 x 10(3) and 2 x
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