Results 41 to 50 of about 8,925 (264)

Intraskeletal histovariability, allometric growth patterns, and their functional implications in bird-like dinosaurs [PDF]

, 2018
With their elongated forelimbs and variable aerial skills, paravian dinosaurs, a clade also comprising modern birds, are in the hotspot of vertebrate evolutionary research.
Adriaens, Dominique, Godefroit, Pascal, Hu, Dong-Yu, Prondvai, Edina   +3 more
core   +3 more sources

Anti-Müllerian hormone concentration and scrotal circumference as predictors of fertility-linked characteristics in male Brahman and Simmental bulls [PDF]

Revista Brasileira de Zootecnia
This study investigates whether pre-pubertal scrotal circumference (SC) and anti-Müllerian hormone (AMH) concentrations indicate sexual precocity in Brahman and Simmental bulls. Fifty-three bulls (Brahman, n = 27; Simmental, n = 26) were used.
Renata Maculan, Jesús Alfonso Sánchez Viafara, Gisvani Lopes de Vasconcelos, Gabriel Miranda Moreira, Cintia Vanin Ribeiro, Nathália Alves, Marcos Brandão Dias Ferreira, José Camisão de Souza   +7 more
doaj   +1 more source

Evo-devo of human adolescence: beyond disease models of early puberty [PDF]

, 2013
Despite substantial heritability in pubertal development, much variation remains to be explained, leaving room for the influence of environmental factors to adjust its phenotypic trajectory in the service of fitness goals.
A Templeton, AB Arquitt, AB Migliano, AK Pesonen, AS Parent, B Bogin, B Campbell, BH Smith, BJ Ellis, BJ Ellis, BJ Ellis, BJ Ellis, BS Zemel, C Ankarberg Lindgren, C Cooper, C Tardieu, CC Chen, CL Sisk, F Deng, GB Cutler Jr, GB Muller, GE Weisfeld, J Belsky, J Belsky, J Belsky, J Belsky, J Belsky, J Belsky, J Belsky, J Belsky, J Belsky, J Bowlby, J Bowlby, J James, J Tinggaard, Jay Belsky, JC Wingfield, JL Locke, JM Tither, KB Simondon, KK Ong, KK Ong, KO Klein, L Aksglaede, LA Proos, M Celio, M Del Giudice, M Krstevska-Konstantinova, M Mead, M Suzuki, ME Pembrey, MR Palmert, N Howell, NM Cameron, PD Gluckman, PD Kroboth, PJ Hunt, RG Westendorp, S White, SB Manuck, SC Stearns, W Arlt, W Copeland, WT Boyce, Z Hochberg, Z Hochberg, Z Hochberg, Z Hochberg, Z Hochberg, Ze'ev Hochberg   +69 more
core   +2 more sources

Pelvic Ultrasound in Diagnosing and Evaluating the Efficacy of Gonadotropin-Releasing Hormone Agonist Therapy in Girls With Idiopathic Central Precocious Puberty

Frontiers in Pharmacology, 2019
Background and Objective: Idiopathic central precocious puberty (ICPP) is characterized by early pubertal changes, the acceleration of growth velocity, and rapid bone maturation that often results in reduced adult height.
Hong-kui Yu, Hong-kui Yu, Xiao Liu, Jia-kun Chen, Shan Wang, Xian-yue Quan   +5 more
doaj   +1 more source

Estimativas de herdabilidade para idade ao primeiro parto de novilhas da raça Nelore Heritability estimates for age at first calving in Nelore cattle

Revista Brasileira de Zootecnia, 2004
Estimaram-se parâmetros genéticos para idade ao primeiro parto (IPP) de, aproximadamente, 6.000 novilhas, utilizando-se três diferentes definições de grupo contemporâneo (GC).
Laila Talarico Dias, Lenira El Faro, Lúcia Galvão de Albuquerque   +2 more
doaj   +1 more source

Efeito da idade de exposição de novilhas à reprodução sobre estimativas de herdabilidade da idade ao primeiro parto em bovinos Nelore Effect of age of exposure of heifers to reproduction on heritability estimates for age at first calving in Nelore cattle

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2004
Estimou-se a herdabilidade da idade ao primeiro parto (IPP) a partir de quatro conjuntos com diferentes tipos de informação. A primeira estimativa (IPP1) foi realizada com as novilhas (n= 6.222) expostas apenas na estação "normal", ou seja, aos 24 meses ...
L.T. Dias, L. EL Faro, L.G. Albuquerque
doaj   +1 more source

Genetic relationship between growth and reproductive traits in Nellore cattle

Animal, 2012
The objective of this study was to evaluate the genetic relationship between postweaning weight gain (PWG), heifer pregnancy (HP), scrotal circumference (SC) at 18 months of age, stayability at 6 years of age (STAY) and finishing visual score at 18 ...
M.L. Santana, Jr, J.P. Eler, J.B.S. Ferraz, E.C. Mattos   +3 more
doaj   +1 more source

Occurrence of testicular microlithiasis in androgen insensitive hypogonadal mice [PDF]

, 2009
<b>Background</b>: Testicular microliths are calcifications found within the seminiferous tubules. In humans, testicular microlithiasis (TM) has an unknown etiology but may be significantly associated with testicular germ cell tumors ...
AC Peterson, Ana Monteiro, BM Cattanach, C Lecureuil, CE Hoei-Hansen, DL Lam, Guido Verhoeven, HH Rashid, J Coffey, J Lang, K De Gendt, K Thomas, Karl De Gendt, L Murphy, LA Korde, M Nistal, M Nistal, M Vegni-Talluri, M Wasniewska, Margaret H Abel, NJ van Casteren, Peter J O'Shaughnessy, R Drut, RA Rey, S Zastrow   +24 more
core   +2 more sources

Descriptive Epidemiology From the Myhre Syndrome Foundation Registry: The Value of Self‐Reported Data

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome is an ultrarare genetic disease characterized by short stature, distinct craniofacial features, cardiovascular and respiratory fibrosis and stenosis, neurodevelopmental delays, autism, intellectual disability, and hearing loss. The natural history of Myhre syndrome is still not fully understood due to a small patient population ...
Mary K. Young, Armelle Pindon, Maggie R. Brand, Kate Wears, Katherine H. Young, Alyssa Mendel, Michael J. Lyons   +6 more
wiley   +1 more source

Endocrine disruptors and abnormalities of pubertal development [PDF]

, 2008
Onset and development of puberty is regulated by the neuroendocrine system. Population-based studies worldwide have observed secular trends towards earlier puberty development. These changes are apparently caused by environmental factors such as improved
Adair, Adair, Berg-Kelly, Blanck, Colon, DeCastro, Den Hond, Den Hond, Dunger, Gamba, Gladen, Gore, Grumbach, Guo, Hertz-Picciotto, Ibanez, Kaya, Klein, Krstevska-Konstantinova, Kubo, Kuhl, Lebrethon, Lee, Legler, Levine, Levy, Lewis, Marshall, Marshall, McKee, McLachlan, Mol, Naftolin, Ohtake, Parent, Patton, Petroff, Proos, Ramirez, Rasier, Rockett, Roselli, Rubin, Safe, Sagiv, Saiyed, Selevan, Singh, Skynner, Staessen, Styne, Teilmann, Tena-Sempere, Tena-Sempere, Terasawa, Traggiai, Vasiliu, Vinggaard, Wade, Warner, Wu, Wu, Zeinoaldini   +62 more
core   +2 more sources