Population Genetics of the Deep-sea Acorn Barnacle (Hoek, 1883) and the First Report of its Affiliation with a Hydrothermal Vent Field.

Confined by the Mid-Atlantic Ridge and the European continental shelf, the deep-sea acorn barnacle (Hoek, 1883) lives in the northeast Atlantic deep sea, where it has been frequently reported in high current areas. Cemented to a solid substrate during its entire adult life, the species can only disperse by means of planktotrophic nauplius larvae. This study reports on the occurrence, ecology and genetic connectivity of from four sites within the northeastern Iceland Basin and presents the first record of the species living affiliated with hydrothermal vent field on the Reykjanes Ridge axis.

Inequities in Inpatient Pediatric Patient Safety Events by Category.

Objectives: Few studies have analyzed potential inequities in both pediatric patient safety events (PSEs) and adverse events (AEs) - PSEs leading to harm - nor in PSEs by event type. We sought to examine potential inequities in rates of pediatric PSEs overall, by severity, and by category based on race and ethnicity, insurance payor, and language as measured using voluntary incident reports (IRs).

Methods: We conducted a retrospective cohort study of pediatric hospitalizations between January 19, 2012 through December 31, 2019 at a US urban, tertiary care children's hospital.

Genetic Mapping of , a New Lethal Allele of .

The mutation was generated in a Flp/FRT EMS screen for conditional mutations that cause growth and developmental defects in a genetic background that blocks apoptosis. The mutations were conditional, based on the allele being present on the starting chromosome, and blocking canonical apoptosis in a homozygous state. The mosaic eyes exhibit defects in eye development including patches of rough eye and irregular surface structure.