Ethics committees and funding agencies often receive protocols that involve either too many or too few animals to answer the specific research question being investigated. It is evident that a greater ...

Conflicting findings are often reported in microbiome association studies, which could be due to insufficient sample sizes and numerous confounders. A new study, utilizing two large-scale human ...

(Portions of this text are reprinted from Dell et al., 2002.) Scientists who intend to use animals in research must justify the number of animals to be used, and committees that review proposals to ...