Velvety tree ant extract is a chemotaxis repellent for .

Ants use a range of compounds for interspecies interactions, but the neurogenetic mechanisms mediating these interactions are unclear. Here, we used chemotaxis assays with the nematode to test if ant compounds can be detected by the worm nervous system and which chemosensory neurons are required for detection. We found that avoid the extracts of velvety tree ants ( ), and this response requires and positive neurons.

Olfactory cues elicit species-specific locomotive responses in poison frog tadpoles.

Amphibian species rear their larvae in distinct environments that may influence how they respond to different sensory stimuli. Here, we investigated the olfactory-mediated locomotive responses of two poison frog species ( and ) that vary in life history strategies. We found that tadpoles spent more time near an injury cue compared to control, while tadpoles increased their movement in response to high concentrations of amino acids.

Upconverting microgauges reveal intraluminal force dynamics in vivo.

The forces generated by action potentials in muscle cells shuttle blood, food and waste products throughout the luminal structures of the body. Although non-invasive electrophysiological techniques exist, most mechanosensors cannot access luminal structures non-invasively. Here we introduce non-toxic ingestible mechanosensors to enable the quantitative study of luminal forces and apply them to study feeding in living Caenorhabditis elegans roundworms.

Meeting report: patient and caregiver recommendations for a mobile health application for paediatric systemic lupus erythematosus.

Paediatric systemic lupus erythematosus (pSLE) management and research could be enhanced by a mobile health application (app); however, no app designed for pSLE is currently available. A development and design committee comprising of patients, parents/caregivers and other stakeholders met to inform development and design of an app specific for pSLE. This meeting report summarises the group's discussions and recommendations that could help create a useful and desirable app or mobile health tool for the pSLE community.