The cloning of 3'-truncated preS/S gene from HBV genomic DNA and its expression in transgenic mice

Table 1 The ELISA results of the surme of transgenic mice expressing the 3'-truncated preS/S at different times

Serial times (week)	Positive control	Negative control	Normal mice	Transgenic mice
				No.1	No.3
15	0.21	0.01	0.00	0.14a	0.09a
19	0.34	0.04	0.00	0.11a	0.11a
23	0.31	0.04	0.01	0.10a	0.26a

^apreS1 Ag-positive was defined as ≥ negative control × 2.1