Table 1 Number of TRV, TRD, TRJ and TRC genes found in human, mouse and opossum. The numbers of functional genes are indicated in parenthesis.

TRAV*

54 (44–47)

98 (73–84)

68 (56)

TRAJ

61 (50)

60 (38)

53 (53)

TRAC

1 (1)

1 (1)

1 (1)

TRDV

3 (3)

6 (5)

6 (4)

TRA/DV

5

10

20

TRDD

3

2

2

TRDJ

4 (4)

2 (2)

6 (5)

TRDC

1 (1)

1 (1)

1 (1)

TRBV

64–67 (40–48)

35 (21–22)

36 (27)

TRBD

2

2

4 (3?)

TRBJ

14 (12–13)

14 (11)

18 (18)

TRBC

2 (2)

2 (2)

4 (4)

TRGV

12–15 (4–6)

7 (7)

9 (9)

TRGJ

5 (5)

4 (4)

7 (5)

TRGC

2 (2)

4 (3)

1 (1)