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The transcription factor HAND2 evolved uterine expression during the origins of pregnancy and may be important for maternal-fetal immune signaling and parturition.

The human placenta negligibly co-expresses the transcripts encoding the canonical cell-entry mediators for SARS-CoV-2, which explains why mothers with COVID-19 rarely transmit the virus to the fetus.

Combining in silico and experimental approaches to identify and understand the residue changes in the H-NS protein that allowed bacteria to adapt environment-sensing to different habitats.

A cellular map of a deep-sea mussel gill unveils how distinct cell types collaborate to cultivate intracellular symbiotic bacteria, providing insights into host–symbiont interactions and environmental adaptation in bivalves.

Physiological differentiation during symbiosis leads to division of labor between smaller and larger cells in an uncultured bacterial tubeworm symbiont population and results in remarkable metabolic diversity and complexity.

Single-cell amplified genome sequencing uncovers virus-host interactions in uncultivated sulfur-oxidizing bacteria with relevance to coupled biogeochemical cycling in marine oxygen minimum zones.

The giant caiman Purussaurus from the Miocene of Venezuela is the first recorded member of crown Crocodylia having three sacrals, thus breaking the otherwise strict vertebral constraint of the group.

Wnt/beta-catenin signaling is essential for the specification of dorsal cell fate in amphioxus, suggesting a common evolutionary origin for the formation of the dorsal organizer in chordates.

Human yolk sac-like cells, which share characteristics with the post-implantation human hypoblast, can model the interaction between the epiblast and hypoblast that occurs during early human development.