- Disease: Bancroftian Filariasis
- Habitat in human: Lymphatic vessels and glands
- Diagnosis of infection: Microscopic examination of blood for microfilariae
- Microfilariae are the infective stage to mosquito vector
Morphological Features of Microfilariae
- Size: 250-300 µm
- Sheathed; but hardly visible as rather delicate and close fitting
- Body is gently curved; tail is tapered to a point
- Cephalic space: equal in length and breadth
- Excretory cell: small; found near the excretory pore
- Internal nuclei: loosely packed spaced and countable;
- No terminal nuclei
- Appearance in blood film: body curves large, regular and smooth
![](https://parasitology.ou.ac.lk/wp-content/uploads/2021/02/microfl_x4-150x150.jpg)
![](https://parasitology.ou.ac.lk/wp-content/uploads/2021/02/microfl_x10-150x150.jpg)
![](https://parasitology.ou.ac.lk/wp-content/uploads/2021/02/microfl_x40-150x150.jpg)
![](https://parasitology.ou.ac.lk/wp-content/uploads/2021/02/microfl_x100-150x150.jpg)