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
Infection with Actinobacillus lignieresi is found frequently in the bovine here in the Middle West. Too frequently the term actinomycosis is used to include those lesions of both the soft tissues and bones of the head and mandible. As a general rule, we find actinobacillosis involving the soft tissue with Actinomyces bovis invading the bony tissue. Actinobacillosis is found most frequently in the region of the head but may become rather generalized involving almost any tissue of the body. Whenever an actinobacillosis abscess is opened the pus is very characteristic as it is nonodorous, very thick and tenacious, may be white or with a slightly yellowish tinge and containing a variable quantity of mucus.
Frank, E. R.
"Actinobacillosis In The Bovine,"
Iowa State University Veterinarian: Vol. 13
, Article 2.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol13/iss3/2