Sporozoa - Toxoplasma gondii , which causes toxoplasmosis,...

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Sporozoa Members of the phylum Sporozoa are exclusively parasites. They are so named because some  members produce sporelike bodies. Often they have an amoeboid body form, but they are not  related to the Sarcodina. Sporozoans are generally parasitic organisms with complex life cycles involving several stages. One  of the best-known members of the group is the  Plasmodium  species, which are the agents of  malaria. The organisms spend portions of their life cycle within mosquitoes. After being injected into  the human bloodstream by the mosquito, the parasites invade the red blood cells, undergo  numerous changes, and emerge from the red blood cells, destroying them. The infected human  experiences a malaria attack soon after.  Another important member of the Sporozoa group is 
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Unformatted text preview: Toxoplasma gondii , which causes toxoplasmosis, a disease of the white blood cells. Toxoplasmosis is normally not a dangerous disease, but pregnant women can pass it to their offspring, where it can cause tissue damage. Also, persons with AIDS are susceptible to severe cases of toxoplasmosis. Two other important pathogens of the Sporozoa group are Cryptosporidium coccidi and Pneumocystis carinii . Both of these organisms cause severe disease in AIDS patients. The first causes a severe intestinal diarrhea that is accompanied by the loss of substantial volumes of water; the second causes a type of pneumonia. Both of these diseases typify the opportunistic diseases that occur when a person is infected with HIV....
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This note was uploaded on 11/11/2011 for the course BIO 101 taught by Professor Pesthy during the Fall '07 term at Texas State.

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