# Viruses, Serums, Toxins, and Analogous Products; Definition of Biological Products and Guidelines
> **Animal and Plant Health Inspection Service** · Final rule. · Published 1997-06-09 · Effective 1997-07-09 · 62 FR 31326
## Document
- **Document number:** 97-14997
- **Category:** plant-animal-health
- **Sub-agency:** Animal and Plant Health Inspection Service
- **Federal Register citation:** 62 FR 31326
- **CFR reference:** 9 CFR 101
- **Publication date:** 1997-06-09
- **Effective date:** 1997-07-09
- **USDA docket:** Docket No. 93-152-2
## Abstract

We are amending the regulations by revising the definition of ``biological products.'' The amendment is necessary in order to reflect current usage and advances in scientific knowledge, and to clarify certain parts of the definition. We are also adding a definition of ``guidelines'' to the regulations. Guidelines are issued to assist manufacturers of veterinary biological products and others in understanding test procedures, standards, and regulatory requirements pertaining to such products. This addition clarifies the purpose and intent of guidelines.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/06/09/97-14997/viruses-serums-toxins-and-analogous-products-definition-of-biological-products-and-guidelines)
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