In article <4dg4u5$3cc at bisance.citi2.fr> Francois-Xavier Maquart, maquart at bisance.citi2.fr writes: > Should I kinase PCR products >(or oligos) for T/A cloning? Either Promega pGEM-T vector system kit >or Invitrogen TA cloning system kit do not discuss this problem. Put simply, yes. Anthony.