Table 1. Summary of Tumor Incidence.

Genotype	Injection Site	Latency Period	Mice with Phenotype (%)
p53 flox/flox	Bursa	3 months	0/13
	Bursa	6 months	2/7 (29) Bursal Cyst
	Oviduct	3 months	0/15
	Oviduct	6 months	1/5*
Smad2DN; p53 flox/flox	Bursa	3 months	2/6 (33) Teratoma
	Bursa	6 months	1/7 (14) Bursal Cyst
	Oviduct	3 months	0/11
	Oviduct	6 months	0/6
Smad2DN+/+	N/A	2–6 months	5/18 (28) Teratoma

^*Intraoviductal injection with leakage into the bursa.