A highly-collimated SiO jet in the HH212 protostellar outflow C. Codella, S. Cabrit, F. Gueth, R. Cesaroni, F. Bacciotti, B. Lefloch and M. J. McCaughrean A&A, 462 3 (2007) L53-L56 Published online: 18 December 2006 DOI: 10.1051/0004-6361:20066800