Table 1.

General status of p53−/−, p21−/−, and wildtype mice

Mousea	Age	Anti-SRBCb	No. of PNA-hi B cells	Total no. of nucleated spleen cells
(1)wildtype   mouse1	11 weeks	1/1024	195,428	72 × 106
(2) p53−/− mouse 1	11 weeks	1/1024	205,616	74 × 106
(3) wildtype mouse2	16 weeks	1/1024	251,645	84 × 106
(4) p53−/− mouse 2	16 weeks	1/1024	270,228	226 × 106
(5) wildtype mouse 3	8 weeks	1/2048	229,312	98 × 106
(6) p53−/− mouse 3	8 weeks	1/2048	240,041	104 × 106
(7) ung control mouse	8 weeks	1/2048	265,482	84 × 106
(8) ung−/− mouse	8 weeks	1/2048	227,856	80 × 106
(9) p53+/− ung−/− mouse	8 weeks	1/1024	215,221	96 × 106
(10) p53−/− ung−/− mouse 1	8 weeks	1/1024	220,662	89 × 106
(11) p53−/− ung−/− mouse 2	8 weeks	1/1024	218,016	92 × 106
p21 wildtype mouse	8 weeks	1/1024	~185,000	90 × 106
p21−/− mouse	8 weeks	1/1024	~180,000	83 × 106

^aThe numbers in parenthesis refer to the mouse numbers in Table 2A.

^bHemaglutinin assay