@article{articleb52ac3eb, title = {'ALFA' - amylase gene as a marker for gene cloning: direct screening of recombinant clones}, author = {Ikuta, N and Souza, M B N and Valencia, F F and Castro, M E B and Schenberg, Ana Clara Guerrini and Pizzirani-Kleiner, A A and Astolfi Filho, S}, year = {1990}, journal = {Biotechnology} }