specifically with a reference or not, are the words of experts in their fields that have been 
reviewed by laboratory animal veterinarians to ensure that welfare considerations are 
included. IACUCs may wish to consider the contributors to this volume when seeking 
an outside expert for a particular protocol. 
Because the field is constantly evolving, and because of space limitations for this type of 
introductory volume, this document could not possibly be exhaustive. Omission of any 
particular procedure should not be taken to mean that it is unacceptable. We hope 
this volume can provide additional background and context for both researchers and IACUCs 
as they consider animal welfare issues with respect to individual research protocols. ■ 
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