Restriction fragment pattern of internal transcribed spacer (ITS) polymerase chain reaction (PCR) products of Aspergillus flavus digested with HaeIII. Lane M1, 100 bp ladder; lane 1, M2 isolate; lane 2, M4 isolate; lane 3, Kh1 isolate; lane 4, Kh2 isolate; lane 5, Kh4 isolate; lane 6, Kh5 isolate; lane 7, Kh6 isolate; lane 8, Kh8 isolate; lane 9, undigested ITS PCR product; lane M2, 100 bp ladder.