As a result, she's applying for grants at the moment to pay a few students a paltry sum to stay and work in her lab over the summer. She will work for free. Any students who can't cover their own room and board on their own probably couldn't afford to stay and work; they need to spend 30 or 40 hours a week in the lab, which pretty much excludes other sources of income. My wife makes the point that it's unfair that poor students can't afford the experience to work in a lab as an undergraduate, even if it will benefit their careers in the long term.