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Animals
2
Argentina
Bagre
2
Cryptogonimidae
Eigenmannia virescens
2
Female
2
Fresh Water
Gymnotiformes
2
Gymnotus carapo
2
Intestines
2
Male
Microscopy, Electron, Scanning
2
Ovary
2
Pisces
2
Rivers
2
Testis
2
Trematoda
2
Vermes
2
animal
2
article
2
classification
2
female
2
fresh water
2
histology
intestine
2
isolation and purification
2
male
2
ovary
2
parasitology
river
2
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1
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2JOUR