Table 2.

J_H gene segment usage in IgV_H4 and IgV_H5DJ_H-Cµ, -Cα and -Cγ transcripts amplified by RT-PCR from the human adult greater omenta

	Human omenta
JH gene segment	IgVH4 + 5-IgM	IgVH4 + 5-IgA	IgVH4 + 5-IgG	Total
JH1	0	1	1	2*
JH2	0	0	0	0
JH3	2	6	7	15
JH4	9	13	13	35
JH5	10	6	4	20
JH6	3	10	5	18
Total number ofimmunoglobulintranscripts	24	36	30	90

^*J_H1 gene segment usage in the omentum (two of 90) compared with the intestinal mucosa and parotid salivary gland (zero of 324) from Thoree et al.¹⁶. P = 0·007 (χ² test). There was no significant difference in J_H1 usage when compared to PBMC and spleen.