Results 51 to 60 of about 3,673 (162)

Conceptus signals for establishment and maintenance of pregnancy

open access: yesReproductive Biology and Endocrinology, 2004
Establishment and maintenance of pregnancy results from signaling by the conceptus (embryo/fetus and associated extraembryonic membranes) and requires progesterone produced by the corpus luteum (CL).
Bazer Fuller W, Spencer Thomas E
doaj   +1 more source

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

open access: yesAdvanced Materials, Volume 38, Issue 20, 7 April 2026.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju   +7 more
wiley   +1 more source

Mind the Litter: The Critical Role of Intralitter Variables in Reproductive and Developmental Toxicology Research

open access: yesBirth Defects Research, Volume 118, Issue 4, April 2026.
ABSTRACT Background Animal models remain essential for understanding developmental toxicology, providing insights into how in utero exposures affect fetal and placental outcomes. Litter‐bearing species are widely used due to their efficiency and reproducibility, but conventional approaches often summarize outcomes at the litter level, masking ...
Lauren T. L. Brown   +4 more
wiley   +1 more source

The Roles of Macrophage Lineage Cells (MLCs) in Brain Aging

open access: yesCNS Neuroscience &Therapeutics, Volume 32, Issue 4, April 2026.
This review highlights the critical role of macrophage lineage cells (MLCs), including microglia, border‐associated macrophages (BAMs), and CNS‐infiltrating monocyte‐derived macrophages (MDMs), in brain aging. It explores the drivers and propagation of MLCs senescence and discusses potential therapeutic strategies targeting MLCs senescence.
Qin Qin   +12 more
wiley   +1 more source

A comprehensive embryonic staging series of the turtle Trachemys scripta

open access: yesDevelopmental Dynamics, Volume 255, Issue 3, Page 260-320, March 2026.
Abstract Background Turtles hold a unique place in vertebrate evolutionary history, making them critical assets in embryology research. Yet, they remain understudied as potential model organisms in the field. Here, to support experimental manipulations with turtle embryos, we have created a complete normal table of development for comprehensive ...
Christina M. Noravian   +6 more
wiley   +1 more source

Developmental potential of mouse embryos without extraembryonic membranes in modified organ culture.

open access: yesCollegium antropologicum, 2004
The long-term stationary culture of postimplanatation embryos without extraembryonic membranes is a method to assess their developmental potential in vitro. The method was almost exclusively used on rat embryos, while mouse embryos were considered unsuitable due to their poor differentiation.
Stević, Nataša   +3 more
openaire   +4 more sources

Regulatory mechanisms of reproduction in locusts and grasshoppers

open access: yesNew Plant Protection, Volume 3, Issue 1, March 2026.
Regulatory networks composed of numerous coding and noncoding genes play crucial roles in the reproduction of locusts and grasshoppers. This review integrates mechanistic advances in reproductive regulation, highlighting environmentally adaptive pathways and providing prospective targets for eco‐friendly pesticides.
Jing He, Jiliang Wang, Xinran Wang
wiley   +1 more source

Vascularised Brain Organoids: Engineering Strategies and Neurobiological Applications

open access: yesCell Proliferation, Volume 59, Issue 3, March 2026.
This review highlights emerging strategies to engineer vascularized brain organoids—including endothelial co‐culture, genetic induction, perfusion systems, and in vivo transplantation—and their applications in modelling neurovascular diseases, evaluating BBB drug delivery, and advancing regenerative medicine.
Yeajin Song   +4 more
wiley   +1 more source

The X Factor in Immunity: Sex Differences Shaped by the X Chromosome

open access: yesImmunological Reviews, Volume 338, Issue 1, March 2026.
ABSTRACT There are sex differences with immune responses where females exhibit stronger immune responses compared to males. Both sex hormones and sex chromosome differences between males and females contribute to the observed sex differences with innate and adaptive immune cell composition and function.
Katherine B. Radovanovic   +2 more
wiley   +1 more source

Expression of calcium transporting proteins by the extraembryonic membranes of squamate reptiles

open access: yesThe FASEB Journal, 2007
Eighty percent of squamate reptiles (snakes and lizards) lay eggs; however, over 100 species bear live young. The evolutionary transition from oviparity to viviparity involves loss of the eggshell, an important source of calcium for developing embryos.
Patricia Cross   +2 more
openaire   +1 more source

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