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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.

From: Comparative genomic analysis and evolution of the T cell receptor loci in the opossum Monodelphis domestica

Species\TCR Human Mouse Opossum
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)
  1. * Include the TRAV that are TRA/D.
  2. [21]