Results 1 to 10 of about 17,088 (300)

Chromosome number, genome size and heterochromatin evolution in diploid species of Ipomoea and related genera (Convolvulaceae: Convolvuloideae) [PDF]

open access: yesActa Botânica Brasílica, 2023
Convolvuloideae is a group of plants formed by genera with n = 15 and high stability of chromosome numbers. Despite being stable, polyploidy is the main mechanism of karyotype evolution for the group and seems to be related to speciation events.
Charlys Seixas Maia Dornelas   +4 more
doaj   +1 more source

Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin [PDF]

open access: yesGenetics and Molecular Biology, 2014
Cytogenetic studies were carried out on samples of Parapteronotus hasemani, Sternarchogiton preto and Sternarchorhamphus muelleri (Apteronotidae, Gymnotiformes) from the Amazon basin. The first two species exhibited both a 2n = 52 karyotype, but differed
Fernando Henrique Ramos Silva   +5 more
doaj   +3 more sources

Spectral imaging and nucleic acid mimics fluorescence in situ hybridization (SI-NAM-FISH) for multiplex detection of clinical pathogens

open access: yesFrontiers in Microbiology, 2022
The application of nucleic acid mimics (NAMs), such as locked nucleic acid (LNA) and 2′-O-methyl-RNA (2’OMe), has improved the performance of fluorescence in situ hybridization (FISH) methods for the detection/location of clinical pathogens since they ...
Andreia S. Azevedo   +16 more
doaj   +1 more source

Progress and challenges in the use of fluorescence‐based flow cytometric assays for anti‐malarial drug susceptibility tests

open access: yesMalaria Journal, 2021
Drug-resistant Plasmodium is a frequent global threat in malaria eradication programmes, highlighting the need for new anti-malarial drugs and efficient detection of treatment failure.
Kasem Kulkeaw
doaj   +1 more source

Diphenyl-Furanones and Diphenyl-Oxopyrrole Derivatives: From Analytical Reagents for Amino Groups to New Fluorochromes for Cytochemical Staining of Chromatin DNA and Chromosomes: Proposal for Intercalative Binding and Fluorescence Mechanism

open access: yesColorants, 2023
Diaryl-furanones are specific analytical reagents for the biochemical detection of primary amines by fluorescence techniques. Well-known reagents are fluorescamine (Fluram) and 2-methoxy-2,4-diphenyl-3(2H)-furanone (MDPF), yielding fluorescent products ...
Juan C. Stockert   +3 more
doaj   +1 more source

Comparative molecular cytogenetics in Melipona Illiger species (Hymenoptera, Apidae)

open access: yesSociobiology, 2018
Cytogenetic studies in Melipona are scarce with only 24 species analyzed cytogenetically. Of these, six species had the rDNA sites physically mapped and characterized by Fluorescent in situ Hybridization (fish).
Vanderly Andrade-Souza   +5 more
doaj   +1 more source

Karyotype relationships among Anastrepha bistrigata, A. striata and A. serpentina (Diptera, Tephritidae)

open access: yesGenetics and Molecular Biology, 2007
The species of Anastrepha are arranged into 17 intrageneric groups. Recently, it was proposed that two species of the striata group, Anastrepha striata and A. bistrigata, might be realocated to serpentina group. Anastrepha bistrigata and A.
Denise Selivon   +3 more
doaj   +1 more source

Cytogenetic studies in six species of Scinax (Anura, Hylidae) clade Scinax ruber from northern and northeastern Brazil

open access: yesGenetics and Molecular Biology, 2015
Scinax species are still underrepresented in cytogenetic studies, mainly with respect to populations from northeastern and northern Brazil. In this study, we provide new chromosomal information on Scinax boesemani, S. camposseabrai, S.
Lídia Nogueira   +5 more
doaj   +1 more source

Meta-analysis of fluorochrome concentrations to assess bull sperm quality by flow cytometry in 2021-2023

open access: yesCzech Journal of Animal Science, 2023
Flow cytometry (FC) is a very powerful method for the assessment of spermatozoa quality in multiple livestock species, including bulls. Nowadays, many flow cytometric tests are available for quality detection of bull sperm.
Filipp Georgijevič Savvulidi   +3 more
doaj   +1 more source

Cytogenetic studies in fishes of the genera Hassar, Platydoras and Opsodoras (Doradidae, Siluriformes) from Jarí and Xingú Rivers, Brazil

open access: yesGenetics and Molecular Biology, 2008
We studied the karyotypes of Hassar cf. orestis and an undescribed Hassar species from the Jarí River and Opsodoras ternetzi, H. orestis and Platydoras cf. costatus from the Xingú River, all with 2n = 58.
Susana Suely Rodrigues Milhomem   +6 more
doaj   +1 more source

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