TABLE 1.

Frequency and absolute numbers of B1 cells for WT and CD6^−/− mice

Data are mean values ± S.D.

B1 cell location	Mice (n)	Frequency
		WT	CD6−/−
		%
Neonatal liver B1a cells		47 ± 12	12 ± 2a
Neonatal liver B1b cells	3	50.33 ± 6.810	87 ± 1.06a
Peripheral blood B1a cells	4	2.41 ± 0.4035	1.635 ± 0.267
Peripheral blood B1b cells	4	2.010 ± 0.459	2.873 ± 0.158
Splenic B1a cells	11	1.4 ± 0.3	0.7 ± 0.8a

B1 cell location	Mice (n)	Absolute cell numbers
		WT	CD6−/−
Neonatal liver B1a cells	3	3,253,000 ± 655,500	1,277,000 ± 99,390a
Neonatal liver B1b cells	3	3,327,000 ± 361,200	9,530,000 ± 240,100b
Peripheral blood B1a cells	4	N/A	N/A
Peripheral blood B1b cells	4	N/A	N/A
Splenic B1a cells	11	403,800 ± 34,760	160,900 ± 26,750a

^a p < 0.001.

^b p < 0.0001.