@article{LehrnbecherMerzSebaldetal.1991,
  author    = {T. Lehrnbecher and H. Merz and Walter Sebald and M. Poot},
  title     = {Interleukin 4 drives phytohemagglutinin-activated T cells through several cell cycles: no synergism between interleukin 2 and interleukin 4},
  year      = {1991},
}