Detection of sea, seb, sec, sed, see, seg, seh, and sei genes in SM600 by PCR. Lane 1, 100-bp size marker; lane 2, sea; lane 3, seb; lane 4, sec; lane 5, sed; lane 6, see; lane 7, seg; lane 8, seh; lane 9, sei; lane 10, 100-bp size marker. The sea, seg, seh, and sei genes were detected in SM600.