Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Efforts directed against bovine tuberculosis have resulted in a reduction of specimens submitted for examination for tuberculosis. The infrequency of such specimens has made it harder to demonstrate to students fresh specimens of tuberculosis. Fresh specimens are always more interesting than preserved specimens, and it is desirable to have as many fresh specimens as possible.
Stubbs, E. L.
Iowa State University Veterinarian: Vol. 1
, Article 9.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol1/iss3/9