organizer region

an area in the animal embryo that appears to control the differentiation of cells in that region. For example, the dorsal lip of the blastopore (see BLASTULA plays a major part in determining the shape of the early embryo.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive ?

An improved technique for selective silver staining of nucleolar organizer region in human chromosomes.

EVALUATION OF SEROUS EFFUSIONS USING AgNOR COUNT--A STUDY IN A TERTIARY CARE CENTRE OF SAHARANPUR

10 Eslami B,yaghmaei M,firoozi M,Nucleolar organizer region in selected odontogenic lesions.

HISTOPATHOLOGICAL VARIANTS OF AMELOBLASTOMA - A STUDY

The objectives of this study were to compare the argyrophilic nucleolar organizer region (AgNOR) parameters and estrogen receptor status with grades of invasive ductal carcinoma of breast.

PROLIFERATION MARKERS, -AgNORs, CORRELATION WITH GRADE OF INVASIVE DUCTAL CARCINOMA OF BREAST

Correlation between DNA flow cytometric and nucleolar organizer region data in non-Hodgkin's lymphomas.

Morphometric analysis of nucleus and nucleolar organizer regions (NORs) in tongue squamous cell carcinoma (SCC)/ Analisis morfometrico de nucleos y regiones del organizador nucleolar (NORs) en carcinomas de celulas escamosas de la lengua (SCC)

Their topics include the evolutionary role of hybridization and polyploidy in an Iberian cyprinid fish, chromosomal analysis in population structuring and stock identification, nucleolar organizer region markers in identifying and managing rainbow trout stocks reared in Brazil, and applying fluorescence in situ hybridization to genome mapping in fish.

Fish cytogenetics

Chromosomes with satellites also had a C-band at the nucleoulus organizer region site on the chromosome and a C-band adjacent to the satellite.

Cytogenetic and nuclear DNA content characterization of diploid Bromus erectus and Bromus variegates

Abbreviations: CI, centromeric index; FISH, fluorescence in situ hybridization; NOR, nucleolar organizer region.

Differences in the rDNA-bearing chromosome divide the Asian-Pacific and Atlantic species of Crassostrea (Bivalvia, Mollusca)

Studies in our laboratory over the past several years have focused on identifying the nucleolar organizer region (NOR)-bearing chromosomes of North American cyprinid fishes (Amemiya and Gold, 1988, 1990; Amemiya et al., 1992).

Chromosomal nor phenotypes of two species of North American cyprinid fishes (Cyprinidae: Teleostei)

Giemsa staining, nucleolar organizer region (NOR) banding, C-positive heterochromatin banding and DAPI fluorescence were used in N metaphases of a specimen collected in Asa Branca Farm, in Aurora do Tocantins municipality, Tocantins state, Brazil.

Description of Karyotype of Kerodon acrobata, an endemic rodent in Brazilian Cerrado/ Primeira descricao do cariotipo de Kerodon acrobata, um roedor endemico do semiarido brasileiro

Nucleolar organizer region variation in chromosomes of three oyster species.

The first description of the karyotype of Dasyprocta azarae Lichtenstein, 1823 (Rodentia, Dasyproctidae) from Brazil/Primera descripcion del cariotipo de Dasyprocta azarae Lichtenstein, 1823 (Rodentia, Dasyproctidae) de Brasil