Results 11 to 20 of about 15,492 (288)

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

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

DIRECT FLUOROCHROMING OF RICKETTSIAE [PDF]

open access: yesJournal of Histochemistry & Cytochemistry, 1964
Several fluorochromes were used to stains directly R. mooseri in smears and tissues. The effects of fixatives, hydrogen ion concentration, time in stain and concentration of stain were studied also. Interference by background fluoresence was minimized by a preliminary staining of fixed preparations with an alcian blue, periodic acid-Schiff sequence ...
D, ANDERSON, D, GREIFF
openaire   +2 more sources

The chromosome number and heterochromatin distribution pattern suggest differentiation among species of the Stylosanthes scabra-seabrana complex [PDF]

open access: yesAnais da Academia Brasileira de Ciências
The genus Stylosanthes has economic importance in semi-arid regions and requires studies that reveal complex relationships between species involving different ploidies.
IRLANE CRISTINE S.A. LIRA   +4 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

Cytogenetic characterization of Melipona rufiventris Lepeletier 1836 and Melipona mondury Smith 1863 (Hymenoptera, Apidae) by C banding and fluorochromes staining

open access: yesGenetics and Molecular Biology, 2008
The stingless bees Melipona rufiventris and M. mondury were analyzed cytogenetically by conventional staining with Giemsa, C-banding and sequential staining with the fluorochromes CMA3/DA/DAPI.
Denilce Meneses Lopes   +3 more
doaj   +1 more source

Stimulated emission depletion microscopy with a single depletion laser using five fluorochromes and fluorescence lifetime phasor separation

open access: yesScientific Reports, 2022
Stimulated emission depletion (STED) microscopy achieves super-resolution by exciting a diffraction-limited volume and then suppressing fluorescence in its outer parts by depletion.
Mariano Gonzalez Pisfil   +5 more
doaj   +1 more source

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