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
Aplastic anemia is defined as a failure of the bone marrow to produce erythrocytes. A milder form of anemia is hypoplastic, in which there is an insufficient number of erythrocytes being released from bone marrow.
Raiser, Steven I. and Hoskins, Johnny D.
"A Case Report of Aplastic Anemia in a Dog,"
Iowa State University Veterinarian: Vol. 33
, Article 9.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol33/iss2/9