Comment on

• Teetering on the brink of danger.

  Pennisi E. Pennisi E. Science. 1996 Mar 22;271(5256):1665-7. doi: 10.1126/science.271.5256.1665. Science. 1996. PMID: 8596923 No abstract available.
• Neonatal tolerance revisited: turning on newborn T cells with dendritic cells.

  Ridge JP, Fuchs EJ, Matzinger P. Ridge JP, et al. Science. 1996 Mar 22;271(5256):1723-6. doi: 10.1126/science.271.5256.1723. Science. 1996. PMID: 8596932
• Induction of protective CTL responses in newborn mice by a murine retrovirus.

  Sarzotti M, Robbins DS, Hoffman PM. Sarzotti M, et al. Science. 1996 Mar 22;271(5256):1726-8. doi: 10.1126/science.271.5256.1726. Science. 1996. PMID: 8596933
• Induction of TH1 and TH2 immunity in neonatal mice.

  Forsthuber T, Yip HC, Lehmann PV. Forsthuber T, et al. Science. 1996 Mar 22;271(5256):1728-30. doi: 10.1126/science.271.5256.1728. Science. 1996. PMID: 8596934