Animals|Computer Simulation|Gene Rearrangement, alpha-Chain T-Cell Antigen Receptor|Gene Rearrangement, delta-Chain T-Cell Antigen Receptor|Genes, T-Cell Receptor alpha|Genes, T-Cell Receptor delta|Mice|Mice, Inbred BALB C|Models, Immunological|Receptors, Antigen, T-Cell, alpha-beta|Reproducibility of Results