1. Purnell, D. M. (1970) Decreased virulence associated with auxotrophic mutations inAspergillus nidulans.Fed. Proc. 29:284. (Abstr.)
2. Purnell, D. M., Martin, G. M. &Dorn, G. L. (1968) Infectious inheritance of pathogenicity inAspergillus.Fed. Proc. 27:477. (Abstr.)
3. Purnell, D. M. &Martin, G. M. (1971)Aspergillus nidulans: Association of certain alkaline phosphatase mutations with decreased virulence for mice.J. Infect. Dis. 123:305–306.
4. Roper, J. A. (1952) Production of heterozygous diploids in filamentous fungiExperientia 8:14–15.
5. Purnell, D. M. (1971) A study of the effects of specific genotypic alterations on the virulence of the filamentous ascomyceteAspergillus nidulans for male DBA/2J mice. Ph. D. Dissertation, University of Washington, Seattle.