From: Public Health Service Policy on Humane Care And Use of Laboratory Animals, IV. Implementation by Institutions, paragraph C.3:
“3. The IACUC may invite consultants to assist in the review of complex issues. Consultants may not approve or withhold approval of an activity or vote with the IACUC unless they are also members of the IACUC.”
See the source document in HTML or PDF format at the OLAW website (http://www.grants.nih.gov/grants/olaw/olaw.htm). The document can also be accessed at www.iacuc.org.