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 most common inflammatory lesion in reptiles is the abscess. Abscesses can arise in any anatomic site, but they are more commonly found on the head and extremities. The bacteria and fungi that cause these abscesses are introduced by the following routes: direct transmission via a penetrating wound, rodent bite, or arthropod vector, hematogenous spread or metastatic extension of a pathogenic microorganism from another diseased site.
Knipper, Kristin L. and Baldwin, Claudia J.
"Management of a Superficial Abcess in a Rainbow Lizard, Agama agama,"
Iowa State University Veterinarian: Vol. 58
, Article 2.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol58/iss1/2