Immunology. One hand clapping.
Travers
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D015704:CD4 Antigens / Q000502:physiology* / Q000648:ultrastructure; D006681:HLA-D Antigens / Q000502:physiology*; D006801:Humans; D008024:Ligands; D015394:Molecular Structure; D011948:Receptors, Antigen, T-Cell / Q000502:physiology; D013601:T-Lymphocytes / Q000502:physiology*
D015704:CD4 Antigens; D006681:HLA-D Antigens; D008024:Ligands; D011948:Receptors, Antigen, T-Cell