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. Author manuscript; available in PMC: 2010 Jun 8.
Published in final edited form as: Transpl Int. 2009 Jan 16;22(6):593–598. doi: 10.1111/j.1432-2277.2008.00816.x

Figure 1.

Figure 1

Original experiments distinguishing the impact of cellular and antibody mediated responses. From [2]. The allantoic cavities of 12-day chick embryos were treated with 2.5 mg of testosterone propionate and then allowed to hatch. This treatment results in complete removal of the bursa and sometimes complete atrophy of the thymus. Shown in the table are the results from three different experiments done on bursaless chickens or bursaless chickens with an atrophic thymus. 1.) The ability of the blood of to produce lesions on the chorioallantoic membrane was tested, 2.) the ability of the chickens to reject skin grafts was tested, and 3.) the tuberculin reaction as a measure of delayed type hypersensitivity was tested.