Search results
Results From The WOW.Com Content Network
Whole blood with microfilaria worm, giemsa stain. L. loa worms have a simple structure consisting of a head (which lacks lips), a body, and a blunt tail. The outer body of the worm is composed of a cuticle with three main layers made up of collagen and other compounds which aid in protecting the nematodes while they are inside the digestive system of their host.
In the human host, Loa loa larvae migrate to the subcutaneous tissue, where they mature into adult worms in approximately one year, but sometimes up to four years. Adult worms migrate in the subcutaneous tissues at a speed of less than 1 cm/min, mating and producing more microfilariae. The adult worms can live up to 17 years in the human host. [5]
Nematodes are very small, slender worms. Most are free-living, often less than 2.5 mm long and some only about 1 mm. Many nematodes are microscopic. Some soil nematodes can reach up to 7 mm in length, and some marine species can reach up to 5 cm. Some are parasitic and can reach lengths of 50 cm or more. [42]
Dracunculus is a genus of spirurid nematode parasites in the family Dracunculidae. The worms can reach a metre in length. If one simply pulls off the protruding head of the worm, the worm will break and leak high levels of foreign antigen which can lead to anaphylactic shock and fast death of the host. Hence it is important to remove the worm ...
Dracunculus medinensis (Guinea worm, dragon worm, fiery serpent [1]) is a nematode that causes dracunculiasis, also known as guinea worm disease. [2] The disease is caused by the female [ 3 ] which, at around 80 centimetres (31 inches) in length, [ 4 ] is among the longest nematodes infecting humans. [ 5 ]
Once the blister bursts and the worm begins to emerge, the wound is soaked in a bucket of water, allowing the worm to empty itself of larvae away from a source of drinking water. [15] As the first part of the worm emerges, it is typically wrapped around a piece of gauze or a stick to maintain steady tension on the worm, encouraging its exit. [ 15 ]
Wuchereria bancrofti is a filarial (arthropod-borne) nematode (roundworm) that is the major cause of lymphatic filariasis. It is one of the three parasitic worms, together with Brugia malayi and B. timori, that infect the lymphatic system to cause lymphatic filariasis. These filarial worms are spread by a variety of mosquito vector species.
Stem and bulb nematodes are migratory endoparasites and can be spread through irrigation water, tools, and animals. [16] When the plants are covered in a film of moisture, D. dipsaci can move upwards to new leaves and stems. They enter through stomata or wounds. [15] D. dipsaci feeds on the parenchymatous cells of the cortex once inside the ...