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Introduction of Spot test in Parasitology

‘Spot test in Parasitology’ is a common spot test in both bachelors as well as master degree programs i.e. B.Sc. MLT/ BMLT or MBBS or M.Sc. MLT/ M.Sc. Clinical/ Medical  Microbiology, etc.  This collection of spots makes your examination easy.

Main features

• Bile stained
• Scientific name for roundworm is Ascaris lumbricoides.
• Route of  infection by ingestion
• Infective form: embryonated egg

Salient Features

1. The egg is not bile-stained.
2. Scientific names for hookworm are Ancylostoma duodenale and Necator americanus
3. Infective agent: Filariform larva
4. Portal of entry: Through the skin.

Salient features

1. The egg is not bile stained
2. Planoconvex in shape.
3. Common names: Threadworm, pinworm, seat worm
4. Clinical features: Pruritus ani (anal itch)

Main features

1. The egg is not bile stained.
2. It contains an oncosphere with three pairs of hooklets.
3. Route of infection: By ingestion of food contaminated with eggs.

Principal  features

1. The egg is bile stained
2. Barrel-shaped with a mucous plug at each pole.
3. Route of infection: By ingestion of embryonated eggs.

Salient features

1. The cyst is quadrinucleate i.e contains four nuclei.
2. It has a central karyosome present in the nucleus.
3. Route of infection: By ingestion of water and food containing cysts.
4. Diseases produced: Amoebic dysentery, Extraintestinal amoebiasis.
5. The liver is the most commonly involved organ in extraintestinal amoebiasis.

Salient features

1. The cyst is oval in shape.
2. It contains four nuclei.
3. The axostyles lie diagonally, forming a dividing line within the cyst wall.
4. Route of infection: By ingestion of cysts.
5. G. lamblia infection causes malabsorption.

Contd…