by successive subcultures in commercial ultrahigh temperature (UHT) low fat milk obtained from Sancor (Santa Fe, Argentina), was treated in boiling water (1:10 w/w) for 30 min with discontinuous stirring
by successive subcultures in commercial ultrahigh temperature (UHT) low fat milk obtained from Sancor (Santa Fe,Argentina), was treated in boiling water (1:10 w/w) for 30 min with discontinuous stirring