Karunakaran, Mohindar M Vγ9 and Vδ2 T cell antigen receptor genes and butyrophilin 3 (BTN3) emerged with placental mammals and are concomitantly preserved in selected species like alpaca (Vicugna pacos). [electronic resource] - Immunogenetics Apr 2014 - 243-54 p. digital Publication Type: Journal Article ISSN: 1432-1211 Standard No.: 10.1007/s00251-014-0763-8 doi Subjects--Topical Terms: Amino Acid SequenceAnimalsButyrophilinsCamelids, New World--geneticsEvolution, MolecularGenes, T-Cell Receptor deltaGenes, T-Cell Receptor gammaHumansHydrophobic and Hydrophilic InteractionsMammals--geneticsMembrane Glycoproteins--geneticsMiceMolecular Sequence DataPhylogenyReceptors, Antigen, T-Cell, gamma-delta--chemistrySequence Homology, Amino AcidSpecies Specificity