Sex Determination
Mostrando 1-12 de 368 artigos, teses e dissertações.
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1. Leydig and Sertoli cell function in individuals with genital ambiguity, 46,XY karyotype, palpable gonads and normal testosterone secretion: a case-control study
Abstract BACKGROUND: Because normal male sexual differentiation is more complex than normal female sexual differentiation, there are more cases of disorders of sex development (DSDs) with 46,XY karyotype that have unclear etiology. However, Leydig and Sertoli cell markers are rarely used in distinguishing such individuals. OBJECTIVES: To evaluate the funct
Sao Paulo Medical Journal. Publicado em: 2022
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2. Field performance of hermaphrodite papaya plants obtained through molecular selection and micropropagation
Abstract Most commercial papaya varieties segregate hermaphrodite and female plants. Growers normally select hermaphrodite plants in the field, due to market preferences. This requires planting multiple plants per site and later thinning of the females, distinguished by flower bud inspection. Micropropagation or the use of molecular markers are two possibili
Crop Breed. Appl. Biotechnol.. Publicado em: 05/12/2019
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3. LA OPERACIÓN DEL DISPOSITIVO DE SEXUALIDAD EN LAS IDENTIDADES EMOCIONALES ATRIBUIDAS A LOS NIÑOS EN LOS LIBROS DE LECTURA ESPAÑOLES Y COLOMBIANOS EN LA PRIMERA MITAD DEL SIGLO XX
RESUMO Nos livros de leitura espanhois e colombianos da escola primária da primeira metade do século 20 é comum atribuir aos seus protagonistas uma identidade emocional fixa e um fundo instintivo que são revelados pelos seus comportamentos. Será estudada a relação do uso dessas atribuições com as estratégias para preparar a subjetividade infantil e
Hist. Educ.. Publicado em: 26/09/2019
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4. Excess Body Weight, Snack Limits and Dental Caries in Brazilian Preschoolers: A Population-Based Study
Abstract Objective: To evaluate the relationship between excess body weight (EBW) and the prevalence of dental caries in preschoolers considering parental control regarding snack consumption. Material and Methods: An observational, population-based, cross-sectional study was conducted at Municipal Child Education Centers in the city of Curitiba, Brazil, in
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 02/09/2019
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5. Sexagem em tamanduá-bandeira (Myrmecophaga tridactyla) por meio do teste da reação em cadeia da polimerase
RESUMO Em tamanduá-bandeira (Myrmecophaga tridactyla) não há dimorfismo sexual, tornando-se necessária a diferenciação entre machos e fêmeas, em especial naqueles indivíduos com finalidade reprodutiva. Entre as diversas técnicas empregadas para a caracterização sexual, a reação em cadeia da polimerase (PCR) é utilizada em mamíferos para identi
Arq. Bras. Med. Vet. Zootec.. Publicado em: 06/06/2019
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6. Prediction equations for energy values of animal meals obtained using meta-analysis
ABSTRACT The objective of this study was to determine prediction equations to estimate the nitrogen-corrected apparent metabolizable energy (AMEn) values of animal meals used in broiler diets through meta-analysis. A bibliographic review was undertaken with studies conducted in Brazil from 2000 to 2016 to catalogue information on AMEn values and the followin
R. Bras. Zootec.. Publicado em: 08/11/2018
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7. New evidences on the regulation of SF-1 expression by POD1/TCF21 in adrenocortical tumor cells
OBJECTIVES: Transcription Factor 21 represses steroidogenic factor 1, a nuclear receptor required for gonadal development, sex determination and the regulation of adrenogonadal steroidogenesis. The aim of this study was to investigate whether silencing or overexpression of the gene Transcription Factor 21 could modulate the gene and protein expression of st
Clinics. Publicado em: 2017-06
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8. Epigenetic modifications and their relation to caste and sex determination and adult division of labor in the stingless bee Melipona scutellaris
Abstract Stingless bees of the genus Melipona, have long been considered an enigmatic case among social insects for their mode of caste determination, where in addition to larval food type and quantity, the genotype also has a saying, as proposed over 50 years ago by Warwick E. Kerr. Several attempts have since tried to test his Mendelian two-loci/two-allele
Genet. Mol. Biol.. Publicado em: 02/03/2017
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9. WELFARE OF BROILERS INGESTING A PRE-SLAUGHTER HYDRIC DIET OF LEMON GRASS
ABSTRACTThe pre-slaughter period is considered critical in broiler production. Several factors contribute to increase the birds' stress, such as handling, harvesting, and transportation, negatively affecting their welfare. This study aimed at evaluating the addition of lemon grass (Cymbopogon citratusStapf) to the drinking water of broilers during the pre-sl
Rev. Bras. Cienc. Avic.. Publicado em: 2015-09
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10. Determination of Boron Isotope Ratios in Tooth Enamel by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) After Matrix Separation by Ion Exchange Chromatography
Boron isotopes in teeth has been a new proxy for dietary reconstructions and its resistance to diagenetic alteration. In this study a method using inductively coupled plasma source mass spectrometry (ICP-MS) for the measurement of boron isotope ratio in human dental enamel has been developed. Human dental enamel were digested with HNO3-H2O2 in a microwave sy
J. Braz. Chem. Soc.. Publicado em: 2015-05
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11. Sex determination in annual fishes: searching for the master sex-determining gene in Austrolebias charrua (Cyprinodontiformes, Rivulidae)
Evolution of sex determination and differentiation in fishes involves a broad range of sex strategies (hermaphroditism, gonochorism, unisexuality, environmental and genetic sex determination). Annual fishes inhabit temporary ponds that dry out during the dry season when adults die. The embryos exhibit an atypical developmental pattern and remain buried in th
Genet. Mol. Biol.. Publicado em: 13/05/2014
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12. Evaluation of conjunctival bacterial flora in patients with Stevens-Johnson Syndrome
OBJECTIVE: To determine the conjunctival bacterial flora present in patients with Stevens-Johnson syndrome. METHODS: A prospective study of the conjunctival bacterial flora was performed in 41 eyes of 22 patients with Stevens-Johnson syndrome. The information gathered included the patient's sex and age, the duration of disease, the cause of Stevens-Johnson
Clinics. Publicado em: 2014-03