Challenging popular “ancient psychedelic mysteries” theory
Peer-Reviewed Publication
Updates every hour. Last Updated: 14-Dec-2025 08:11 ET (14-Dec-2025 13:11 GMT/UTC)
A new article in Ecological and Evolutionary Physiology examines how the immune system and reproduction interact in female mammals, especially during pregnancy, from mating to birth.
Lauren E. MacDonald, Chloe C. Josefson, Bethaney D. Fehrenkamp, and Teri J. Orr explore how this relationship evolved and its effects on survival in their paper, "Reproductive Immunology from Copulation to Parturition in an Evolutionary and Ecological Context."
Short-nosed dog breeds, like French Bulldogs and Pugs, remain immensely popular. But are they truly better companion animals than other breeds? According to a new study by ethologists at Eötvös Loránd University (ELTE), short noses may indeed influence behavior — but just as important are small body size and owner treatment. These dogs are often spoiled and less frequently trained, which affects their behavior. While short-nosed dogs may be calmer and less reactive, these potential benefits often fail to emerge without proper upbringing.
The precise mechanism of cellular condensation and regeneration is not well-understood in organogenesis. For advances in regenerative medicine, understanding these mechanisms is crucial. In a new study, researchers used single-cell transcriptomics to understand the composition of human dental follicles and dental papillae. They found a PDGFRA+ mesenchymal stem cell with odontogenic potential that interacts with endothelial cells via paracrine signaling to stimulate angiogenesis, showing promise for future therapeutics in dental regenerative medicine.