Direct ITS-PCR amplification products of several yeast species. Template DNA was extracted from washed overnight TGY broth cultures by boiling. Lanes: 1, Y. lipolytica; 2, C. guilliermondii; 3, C. sake; 4, C. parapsilosis; 5, C. tropicalis; 6, C. krusei; 7, C. famata; M, DNA size marker.