Few parasite eggs
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Transcript of Few parasite eggs
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FEW PARASITE EGGS
Anil RegmiMedical Student
Nepalgunj Medical College
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Ascaris lumbricoides
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Fertilized egg
Bile stained, so brownish in colour Shape : round to oval Size : 60-70 * 40-50 micrometer Surrounded by a thick translucent shell with
an outer albuminous coat ( absence of this layer is decorticated egg
Contains very large conspicuous granule, unsegmented ovum
Crescentic area on each pole Floats on saturated solution of common salt
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Fertilized egg
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Decorticated egg
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Unfertilized egg
Bile stained, so brownish in colour Shape : narrower and longer Size : 80 * 55 micrometer Has thinner shell with an irregular coating
of albumin Contains small atrophied ovum with a
mass disorganised, highly refractile granules of various sizes
Does not floats on saturated solution of common salt
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Unfertilized egg
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Hook Worm Non-bile stained, so colourless Shape : oval or elliptical Surrounded by transparent hyaline-shell
membrane Contains a segmented ovum usually with
4 blastomers floats on saturated solution of common
salt
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Egg of hookworm
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Trichuris trichura Bile stained, so brownish in colour Shape : barrel-shaped with projecting
mucus plug at both pole Size : 50 * 25 micrometer Has double shell Ovum: unsegmented floats on saturated solution of common
salt
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Egg of trichuris trichura
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Taenia sps. Bile stained, so brownish in colour Shape : round to oval Size : 33 * 43micrometer Has two membranes:
1. outer: transparent 2. inner: embryopore Embryo contains six hooklets (hexacanth
embryo)
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Taenia sps.
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Enterobius vermicularis Non-bile stained, so colourless Shape : asymetrical, being plano-concave
(ventral side flattened, dorsal side convex)
Size : 50-60 * 30 micrometer Has transparent shell Contains a coiled tadpole like larva floats in saturated solution of common
salt
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Enterobius vermicularis
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Thank you for your Patience
Its only my practice, there might be some mistakesSo please do not depend on it fully