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
The clinical symptoms in this disease complex vary according to the location and degree of involvement of the affected tissues or organs. Cases suffering from lymphomatosis of the nerve type, may be observed as a unilateral, bilateral, local or general paralysis. Paralysis of one or ' both legs, or paralysis of one or both wings is most commonly observed. These manifestations may be only slight or may be so severe that the fowl is practically helpless.
Lee, C. D.
"The Fowl Leukosis Complex,"
Iowa State University Veterinarian: Vol. 5
, Article 4.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol5/iss1/4