TABLE 2.

Effect of the T-ag variable domain on SV40 tumor development in hamsters

T-ag	Cladea	Constructb	No. of tumors/no. of animals	% Tumors
CPC	B	CPC-CPC	18/33	54
		776-CPC	1/15	7
Total			19/48	40c
Baylor	B	CPC-Baylor	7/19	37
		776-Baylor	5/15	33
Total			12/34	35
PML	C	CPC-PML	11/19	58
		776-PML	1/18	6
Total			12/37	32
776	A	CPC-776	6/17	35
		776-776	3/30	10
Total			9/47	19c
VA	Ungrouped	CPC-VA	4/17	24
		776-VA	4/31	13
Total			8/48	17c

^aFrom reference 18.

^bData from Table 1. Only constructs with SVCPC(1E) and 776(2E) regulatory regions were compared.

^cP values for CPC T-ag versus 776 T-ag or VA T-ag were <0.05. Other comparisons were not significantly different.