> ## Documentation Index
> Fetch the complete documentation index at: https://glossary.micahealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Experimental arm

A group of study participants who receive the new treatment being tested in the trial.

## Related terms

<CardGroup cols={3}>
  <Card title="Eligibility criteria" href="eligibility_criteria" />

  <Card title="Sex" href="sex" />
</CardGroup>

[*Source*](https://clinicaltrials.gov/study-basics/glossary)