. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Fig. 72. A common fresh-water crab of Japan, Eriocheir japonicus, which serves as a host for lung fiuke. (After Yoshida.). Fig. 73. A, encysted cercaria of human lung fluke, Paragonimus ringeri, from gill of crab; B, larva emerging from cyst. o. s., oral sucker; int., intestine; ex. v., excretory vesicle; v. is., ventral sucker. X 50. (After Yoshida.) occur in the gills. They vary in number from a few to several hundred. In some localities a very high per cent of crabs are infected, Nakagawa reporting t
. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Fig. 72. A common fresh-water crab of Japan, Eriocheir japonicus, which serves as a host for lung fiuke. (After Yoshida.). Fig. 73. A, encysted cercaria of human lung fluke, Paragonimus ringeri, from gill of crab; B, larva emerging from cyst. o. s., oral sucker; int., intestine; ex. v., excretory vesicle; v. is., ventral sucker. X 50. (After Yoshida.) occur in the gills. They vary in number from a few to several hundred. In some localities a very high per cent of crabs are infected, Nakagawa reporting that practically 100 per cent are infected in one district in Formosa where the lung fluke is very common. The cysts containing the cercaria are nearly round, mm. (sV of an inch) or less in diameter, and have relatively. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chandler, Asa Crawford, 1891-. New York, J. Wiley
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