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Image #   21255B
Name:   Parasitic protozoan promastigote (Leishmania braziliensis)
Copyright:   Copyright 2010 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Parasitic promastigotes that cause leishmaniasis in humans (Leishmania braziliensis). This tropical protozoan disease is transmitted by bites from infected sand flies (insect vector). The parasites are ingested by the insect vector during a blood meal from a mammal or human. The parasites in humans are found within macrophages in the amastigote form. In the blood stream they transform into the promastigote form. Promastigotes multiple by longitudinal fission in the gut of the insect. Leishmaniasis occurs in two forms: cutaneous which affects the skin and mucous membranes, usually giving rise to an ulcer at the site of the insect bite. Some patients develop a more destructive and progressive infection in mucosal tissue. The more serious kala-azar causes fever and liver damage, and it can be fatal.
Magnification*: x2,200
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   21255B protozoa Leishmania donovani protozoan promastigote leishmaniasis pathogen carrier kala-azar zoonosis flagellate flagella flagellum division parasite Leishmania amazonensis human disease insect vector borne SEM Leishmnania protozoans human pathogen sand flies sand fly sand fly vector sandflies sandfly sandfly vector skin infection skin infections fever liver damage tropical disease tropical protozoa tropical protozoan tropical protozoans 03.01.10 cutaneous Leishmania cutaneous cutaneous leishmaniasis larva migrans mucocutaneous mucocutaneous leishmaniasis cutaneous ulceration cutaneous ulcerations new world pathogen new world pathogens pathogen pathogens world pathogen world pathogens Leishmania braziliensis endemic endemic pathogen intracellular pathogen intracellular pathogens protozoa disease protozoal disease protozoan disease skin lesion skin lesions human parasite dermal cutaneous leishmaniasis dermal cutaneous leishmania mucocutaneous leishmania parasitic

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