APPENDIX A 
GLOSSARY 
1. AEROSOL: A colloid of liquid or solid particles suspended in a 
gas, usually air. 
2. ANTIBODY: A protein formed in the body as a result of the 
inoculation of an antigen, and which may subsequently defend the 
body against that antigen. 
3. ANTIGEN: A substance that when injected into an animal causes 
the formation of antibodies. 
4. AUTOCLAVE: An apparatus for effecting sterilization by steam 
under pressure. It is fitted with a gauge that automatically regulates 
the pressure, and thus the degree of heat to which the contents are 
subjected. 
5. BACTERIOPHAGE: A virus that infects only bacteria. 
6. BID: Bureaus, Institutes, and Divisions of NIH. 
7. BIOHAZARD: A contraction of the words "biological hazard"; 
infectious agents presenting a risk or potential risk to the well-being 
of man, or other animals, either directly through infection or 
indirectly through disruption of the environment. 
8. BIOHAZARDOUS AGENT: Any microbial unit capable or potentially 
capable of presenting a biohazard. 
9. BIOHAZARD AREA: Any area (a complete operating complex, a 
single facility, a single room within a facility, etc. ) in which work 
has been, or is being, performed with biohazardous agents or 
materials. 
10. BIOHAZARD CONTROL: Any set of equipment and procedures 
utilized to prevent or minimize the exposure of man and his environ- 
ment to biohazardous agents or materials. 
11. BIOHAZARDOUS MATERIAL: Any substance which contains or poten- 
tially contains biohazardous agents. 
12. BIOWASTE: Liquid wastes from biological research procedures. 
13. GDC: Center for Disease Control, United States Public Health 
Service, Atlanta, Georgia. 
Appendix A — 1 
