The probe appears to be highly specific. No reaction was seen in
any of the tissues prepared from SPF shrimp (data not shown). We
also tested the EHP probe to a P. monodon affected with cotton
shrimp disease, in which the tail muscle was severely infected with
a Pleistophora-like microsporidium, of which the spores appeared
more eosinophilic (Fig. 1E). The EHP probe did not react to this P.
monodon with cotton shrimp disease (Fig. 1F).