From the University of California Statement of Ethical Values and Standards of Ethical Conduct:

All members of the University community engaged in research are expected to conduct their research with integrity and intellectual honesty at all times and with appropriate regard for human and animal subjects. To protect the rights of human subjects, all research involving human subjects is to be reviewed by institutional review boards. Similarly, to protect the welfare of animal subjects, all research involving animal subjects is to be reviewed by institutional animal care and use committees. The University prohibits research misconduct. Members of the University community engaged in research are not to: fabricate data or results; change or knowingly omit data or results to misrepresent results in the research record; or intentionally misappropriate the ideas, writings, research, or findings of others. All those engaged in research are expected to pursue the advancement of knowledge while meeting the highest standards of honesty, accuracy, and objectivity. They are also expected to demonstrate accountability for sponsors’ funds and to comply with specific terms and conditions of contracts and grants.

Additional resources:

The Undergraduate Research Ethics Online Center from the University of Montana's Mansfield Ethics and Public Affairs Program

The Ethics in Science and Engineering National Clearinghouse at The Science, Technology & Society Initiative @ the University of Massachusetts Amherst