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Rats undergoing the stress-enhanced fear learning procedure are usually housed in social isolation and exposed to a trauma-like experience of 15 massed electric footshocks. By showing that group-housed rats receiving fewer and lower-magnitude electric shocks still exhibit PTSD-relevant changes, this new study presents refinements of the procedure to reduce potential animal pain.
Sound levels, vibration, temperature, humidity and luminance were recorded in an animal facility that houses nonhuman primates; the findings may be used to characterize environmental conditions in similar primate facilities and inform best practices for nonhuman primate research and care.
Giannuzzi et al. present an integrated analysis of clinical features and exome and RNA sequencing data in a cohort of dogs with diffuse large B-cell lymphoma to better define the genetic landscape of this tumor and identify multiple mutations associated with the outcome.
In this article, the authors identify LanCL1 as a major male germ cell-specific antioxidant gene. Using different mouse models, they show that LanCL1 deficiency results in spermatozoal oxidative damage and impaired male fertility, while LanCL1 transgene expression protects mice against high-fat-diet-induced oxidative damage and subfertility.
In this article, Henry et al. examine how the geometry, size, opacity and depth of test chambers influence common behavioral responses in Artemia franciscana.