1. Don't lose touch with the lab. Take time--even if it's only a few minutes a week--to talk individually to lab team members about their work.
2. Address problems as soon as they arise.
3. Clearly define the objective of each lab project.
4. Let scientists be scientists. Let them pursue a project in a way they think is optimal.
5. Be available--and let it be known you're available--to help when help is needed.
6. Communicate. Keep team members informed about the institution or company, the field, and your own thoughts about the lab's work. Listen to their thoughts and ideas.
7. Give criticism in private.