The chromosomal DNA of
Sarcocystis gigantea and
Sarcocystis muris were digested with
NotI and
SfiI and characterized in contour-clamped homogeneous electric fields. Under these electric fields, the chromosomal DNA of
S. gigantea and
S. muris showed different electrophoretic mobilities. Therefore, it appears that this technique may be useful in future studies on the differentiation of
Sarcocystis species. The results of
NotI and
SfiI digestion of
S. muris chromosomes suggested that there is an absence of a significant number of recognition sites for these two enzymes in the genome of
S. muris. The addition of the sizes of 15
SfiI fragments of
S. gigantea DNA suggested that the
S. gigantea genome is larger than 14 mb.
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