The dependence of Nematostella germ cell specification on zygotic Hedgehog pathway activity supports the hypothesis that the eumetazoan common ancestor segregated its germline by inductive signals rather than maternal determinants.
Live imaging coupled with cell lineage tracing in chick and mouse embryos reveal that the cardiac regulatory gene Nkx2.5 is also transiently expressed in early extra-cardiac hemogenic angioblasts that migrate to the heart, yolk sac and dorsal aorta.
In a drug choice setting, rats’ preference is initially driven by deliberative processes but shifts to more automatic selection processes after extended training, in accordance with the sequential choice model.
Cryo-EM reveals that an unexpected domain separation in the zona pellucida module of uromodulin is required for its assembly to filamentous homopolymers that promote pathogen clearance in urinary tract infections.
PIE-1 engages SUMO to preserve the embryonic germline fate and also to promote the assembly of a MEP-1/Mi-2/HDA-1 chromatin remodeling complex required for inherited Argonaute-mediated gene silencing in the adult hermaphrodite germline.
Amphetamine reduces reward signaling by neurons in rat prefrontal cortex, but increases the stability of population dynamics, which account for animals’ increased task engagement, despite reduced reward motivation.