A number of Toxoplasma gondii strains from genetic crosses between parental strains II and III are now available at the Biodefense and Emerging Infections Research Resources Repository (BEI Resources). These were deposited by Dr. David Sibley.
Robert Molestina, Ph.D.
10801 University Boulevard
Manassas, VA 20110
Phone: (703) 365-2700 (ext. 2628)
Facsimile: (703) 365-2701