title: Helper signals in T-T cell collaboration.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D003602:Cytotoxicity, Immunologic; D005260:Female; D006183:H-2 Antigens; D007700:Kinetics; D008211:Lymphocyte Cooperation; D051379:Mice; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D008819:Mice, Nude; D008970:Molecular Weight; D012995:Solubility; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology*; D014357:Trypsin / Q000494:pharmacology
chemical_list: D006183:H-2 Antigens; D014357:Trypsin