2015م - 1444هـ
نبذه عن الكتاب:
Blood & Tissue Protozoa – The Hemoflagellates
A. Introduction
1. The family Trypanosomatidae, (includes hemoflagellates) contain only two
genera that parasitize humans.
a. Genus Leishmania are always intracellular, principally in cells of the
reticuloendothelial system.
b. Genus Trypanosoma contains members that may be found both in the
circulating blood and intracellularly in cardiac muscle. African - blood;
American - cardiac muscle.
2. In all probability, the hemoflagellates were originally parasites of insects. They
are transmitted by insects, and in them undergo a developmental cycle (the
arthropod serves as intermediate host).
a. "Old World” leishmaniasis - transmitted by the bite of various species of
sandflies of the genus Phlebotomus.
b. South American leishmaniasis - carried by Lutzomyia spp. sandflies.
c. American trypanosomiasis - transmitted by reduviid bugs; transmission
occurs when infective feces of the bug contaminates the wound made by
the insect's bite or an abrasion of the skin
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Parasitology or Mycology Lecture Guide Blood
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Parasitology or Mycology Lecture Guide Blood
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