Research on potential pathogens is governed by standards established by the U.S. Centers for Disease Control and the National Institutes of Health. These organizations publish the manual Biosafety in Microbiological and Biomedical Laboratories which is the standards for containment and safe handling of these organisms.

The manual can be found on the CDC's Office of Health and Safety website at http://www.cdc.gov/od/ohs/biosfty/biosfty.htm.

Culture plates cannot be displayed in science fair projects, since they may contain harmful microorganisms.
 

Other web resources:

Bergey's Manual of Systematic Bacteriology: http://www.cme.msu.edu/bergeys/bmsb.html
Animal Tissue (including human):

See The U.S. Occupational Safety and Health Administration Standards at http://www.osha-slc.gov/OshStd_data/1910_1030.html