Activation and silencing of secondary metabolites in Streptomyces albus and Streptomyces lividans after transformation with cosmids containing the thienamycin gene cluster from Streptomyces cattleya

1. Braña, A.F.
2. Rodríguez, M.
3. Pahari, P.
4. Rohr, J.
5. García, L.A.
6. Blanco, G.