Every embryo of an organism that reproduces sexually faces an early and consequential decision: which of its cell lineages will make up the mortal body, and which will become the germline, the lineage ...

The age-old mystery of whether the chicken or the egg came first may finally have a definitive answer — and the truth goes back much further than anyone might expect. Scientists have uncovered ...

When you glance at a chicken pecking around your backyard, it’s hard to imagine this feathered farm animal has any connection to the mighty Tyrannosaurus rex that dominated the prehistoric landscape ...

Something quietly extraordinary happened on May 19, 2026. In a lab in Dallas, Texas, 26 baby chicks broke free from their shells and took their first wobbly steps into the world. That alone sounds ...

A fossilized egg from southern China has revealed one of the most complete dinosaur embryo ever found. In a peer reviewed study, scientists describe the tiny animal, nicknamed Baby Yingliang, and the ...

The complex web of life holds countless mysteries and its origins inspire endless queries. The question of which came first – the chicken or the egg – is a classic example. This biological conundrum ...

This important paper by Lechler and colleagues describes the transcriptomic signature and fate of intermediate cells (ICs), a transient and poorly defined embryonic cell type in the skin. The paper ...

Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal Coimbra Chemistry Centre, Institute of Molecular Sciences − IMS, Faculty of ...

Organoids are three-dimensional (3D) cell culture systems that can be called “mini-organs” as they mimic some of the key multicellular, anatomical and even functional characteristics of real organs.

Mature endothelial cells (ECs) are heterogeneous, with subtypes defined by tissue origin and position within the vascular bed (ie, artery, capillary, vein, and lymphatic). How this heterogeneity is ...