'This is PEEP' participatory qualitative study: learning from a provincial consultation and advisory group of people with lived and living experience of substance use in British Columbia, Canada.

Objectives: To summarise PEEP's (Professionals for Ethical Engagement of Peers-a group of consultants with lived and living experience of substance use) outputs and gain insights into PEEP's impact and suggestions for the future.

Design: Included an environmental scan to collate PEEP activities and outputs and a participatory qualitative design using thematic analysis.

Setting: British Columbia, Canada.

Genome-wide fitness analysis of reveals mutants are attenuated due to iron restriction .

is a globally disseminated pathogen that is the cause of over 100 million infections per year. The resulting diseases are dependent upon host susceptibility and the infecting serovar. As serovar Typhimurium induces a typhoid-like disease in mice, this model has been used extensively to illuminate various aspects of infection and host responses.

Retrotransposon addiction promotes centromere function via epigenetically activated small RNAs.

Retrotransposons have invaded eukaryotic centromeres in cycles of repeat expansion and purging, but the function of centromeric retrotransposons has remained unclear. In Arabidopsis, centromeric ATHILA retrotransposons give rise to epigenetically activated short interfering RNAs in mutants in DECREASE IN DNA METHYLATION1 (DDM1). Here we show that mutants that lose both DDM1 and RNA-dependent RNA polymerase have pleiotropic developmental defects and mis-segregate chromosome 5 during mitosis.

Type 5 secretion system antigens as vaccines against Gram-negative bacterial infections.

Infections caused by Gram-negative bacteria are leading causes of mortality worldwide. Due to the rise in antibiotic resistant strains, there is a desperate need for alternative strategies to control infections caused by these organisms. One such approach is the prevention of infection through vaccination.