A theory of efficient coding wherein the precision of representations is endogenous, task-dependent, and prior-dependent predicts scaling laws for imprecision and is supported by numerosity perception experiments with humans.
Placenta-binding parasites show that chromatin-based mechanisms regulate placental malaria virulence gene, var2csa, and requires loss of H3K9me3-mediated heterochromatic silencing and 3D nuclear repositioning away from telomeric-repressive clusters.
Identification of each animal in a collective becomes possible even when individuals are never all visible simultaneously, enabling faster and more accurate analysis of collective behavior.
Structural and biochemical analyses identify a bacterial lipoprotein that associates with the outer membrane component of tripartite multi-drug efflux pumps, and its potential functional roles are explored by complementary bioinformatics, proteomcid and genetic approaches.
