Results 61 to 70 of about 1,905 (165)

Ex Vivo Spatiotemporal Characterization of Spermatogenesis in Mouse Testicular Organoids

Advanced Science, Volume 13, Issue 4, 19 January 2026.
To date, in vitro spermatogenesis remains a challenge in reproductive medicine. In this study, Sun et al. developed a promising in vitro strategy to generate testicular organoids that enable germ cells from newborn mice to enter meiosis, complete chromosome recombination and synapsis, and develop into haploid spermatids.
Jiachen Sun, Lifa Zhu, Yutong Li, Jinyan Tang, Tao Zhang, Hengjia Zhang, Wanchu Wang, Lufan Li, Shuhui Bian, Xin Wu   +9 more
wiley   +1 more source

The Development of the Human Female Reproductive Tract: Part 2—Vagina

Clinical Anatomy, Volume 39, Issue 1, Page 112-131, January 2026.
ABSTRACT Urogenital epithelium replaces the original paramesonephric (Müllerian) epithelium in the human fetal vagina. We re‐investigated this cell replacement histologically and with three‐dimensional reconstructions. In the lesser pelvis, both Müllerian ducts fuse to form the uterovaginal canal.
Cindy J. M. Hülsman, S. Eleonore Köhler, Gabriela Morosan‐Puopolo, Jill P. J. M. Hikspoors, Wouter H. Lamers   +4 more
wiley   +1 more source

Ultraviolet and yellow reflectance but not fluorescence is important for visual discrimination of conspecifics by Heliconius erato [PDF]

, 2016
Toxic Heliconius butterflies have yellow hindwing bars that – unlike those of their closest relatives – reflect ultraviolet (UV) and long wavelength light, and also fluoresce.
Briscoe, Adriana D, Finkbeiner, Susan D, Fishman, Dmitry, Osorio, Daniel   +3 more
core   +2 more sources

Phylogeny, systematics and evolution of mimicry patterns in Neotropical limenitidine butterflies

Systematic Entomology, Volume 51, Issue 1, January‐March 2026.
The most comprehensive phylogeny for Adelpha reveals that it is not monophyletic, supporting the description of the new genus Adelphina for the alala‐group. The rate of mimicry evolution increases towards the tropics, consistent with the hypothesis of stronger biotic interactions near the equator.
Erika Páez V., Gael J. Kergoat, Nicolas Chazot, Mohamed Benmesbah, Adriana D. Briscoe, Susan D. Finkbeiner, André V. L. Freitas, Robert P. Guralnick, Ryan I. Hill, Marcus R. Kronforst, Luiza Moraes Magaldi, Sean P. Mullen, Ichiro Nakamura, Hannah L. Owens, Niklas Wahlberg, Maxwell Woodbury, Marianne Elias, Keith R. Willmott   +17 more
wiley   +1 more source

Dynamic karyotype evolution and unique sex determination systems in Leptidea wood white butterflies [PDF]

, 1943
[Background] Chromosomal rearrangements have the potential to limit the rate and pattern of gene flow within and between species and thus play a direct role in promoting and maintaining speciation.
Šíchová, Jindra, Voleníková, Anna, Dincă, Vlad, Nguyen, Petr, Vila, Roger, Sahara, Ken, Marec, František   +6 more
core   +1 more source

Intestinal Atresia in PPP1R12A ‐Related Urogenital and Brain Malformation Syndrome

American Journal of Medical Genetics Part A, Volume 197, Issue 12, December 2025.
ABSTRACT PPP1R12A‐related urogenital and brain malformation syndrome (UBMS) is a newly described disorder characterized by congenital anomalies primarily involving the urogenital system and the brain. We describe a preterm female neonate with multiple congenital anomalies, including type IIIb jejunal atresia, incomplete intestinal rotation, imperforate
Adriana Gomes, Sanjana Karamcheti, Álvaro Martín Rodriguez, Anna‐Kaisa Niemi, Lynne M. Bird   +4 more
wiley   +1 more source

Mito‐nuclear discordance at a mimicry color transition zone in bumble bee Bombus melanopygus

Ecology and Evolution, 2021
As hybrid zones exhibit selective patterns of gene flow between otherwise distinct lineages, they can be especially valuable for informing processes of microevolution and speciation.
Briana E. Wham, Sarthok Rasique Rahman, Marena Martinez‐Correa, Heather M. Hines   +3 more
doaj   +1 more source

ATRX: From Chromatin Remodeling to Disease

genesis, Volume 63, Issue 6, December 2025.
ABSTRACT Chromatin remodeling proteins are evolutionarily conserved factors involved in a wide range of biological processes. In this review, we describe ATRX, a chromatin remodeling protein belonging to the SWI/SNF2 family. Its association with different protein complexes, and its roles in embryonic development, sexual differentiation, as well as ...
Mauro Magaña‐Acosta, Viviana Valadez‐Graham   +1 more
wiley   +1 more source

Mimicry and masquerade from the avian visual perspective

Current Zoology, 2012
Several of the most celebrated examples of visual mimicry, like mimetic eggs laid by avian brood parasites and pala­table insects mimicking distasteful ones, involve signals directed at the eyes of birds.
Mary Caswell STODDARD
doaj  

Melanic variation underlies aposematic color variation in two hymenopteran mimicry systems. [PDF]

PLoS ONE, 2017
The stinging hymenopteran velvet ants (Mutillidae) and bumble bees (Apidae: Bombus spp.) have both undergone extensive diversification in aposematic color patterns, including yellow-red hues and contrasting dark-light body coloration, as a result of ...
Heather M Hines, Paige Witkowski, Joseph S Wilson, Kazumasa Wakamatsu   +3 more
doaj   +1 more source