Sunday, August 3, 2008

- Eggs in Medical parasitology 2.

Colour of helminthic eggs :-

** yellowish brown eggs:-

eggs of



- Fasciola hepatica .

- Fasciolopsis buski .

- Fasciola gigantica .

- Heterophyes heterophyes.

- Hymenolepis diminuta.

- Metagonimus yokogawai.

- Diphyllobothrium latum .

- Diphyllobothrium mansoni .

- Dipylidium caninum .

- Trichuris trichiura .

- Capillaria philippinensis.

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** Golden brown eggs:-

eggs of


- Paragonimus westermani.

- Ascaris lumbricoides.

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** Dark brown eggs:-

eggs of - Toxocara species.

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** Brown eggs :-

eggs of


- Taenia solium .

- Taenia saginata .

- Taenia multiceps .

- Echinococcus granulosus .

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** Transparent eggs :-

eggs of


- Shistosoma mansoni.

- Shistosoma Japonicum.

- Shistosoma haematobium.

- Trichostrongylus colubriformis.

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** Colouless eggs :-

egg of


- Hymenolepis nana.

- Strongyloides stercoralis.

- Hookworms.

- Enterobius vermicularis.

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- Content Of the eggs :-

** Immature eggs (no embryo ) :-

eggs of


- Fasciola hepatica .

- Fasciolopsis buski .

- Fasciola gigantica .

- Diphyllobothrium latum .

- Diphyllobothrium mansoni .

- Trichuris trichiura .

- Capillaria philippinensis.

- Hookworms.

- Trichostrongylus colubriformis.

- Paragonimus westermani.

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** Mature eggs (contain embryo ) :-

eggs of


- Heterophyes heterophyes.

- Shistosoma mansoni.

- Shistosoma Japonicum.

- Shistosoma haematobium.

- Taenia solium .

- Taenia saginata .

- Taenia multiceps .

- Echinococcus granulosus .

- Hymenolepis diminuta.

- Hymenolepis nana.

- Dipylidium caninum .

- Enterobius vermicularis.

- Strongyloides stercoralis.

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- operculated eggs :-

eggs of


- Fasciola hepatica .

- Fasciolopsis buski .

- Fasciola gigantica .

- Heterophyes heterophyes ( operculated at

one pole & has a knob at the other pole ).

- Paragonimus westermani( flat operculum ) .

- Diphyllobothrium latum .

- Diphyllobothrium mansoni .

- Capillaria philippinensis.

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- eggs of Shistosoma :-

- Shistosoma mansoni.

has lateral spine.

- Shistosoma Japonicum.

has lateral &short curved spine.

- Shistosoma haematobium.

has terminal spine.

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