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Multiple parasites: Difference between revisions

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<span style="color:navy>'''What are double infected cells?'''


<span style="color:navy>'''Description'''</span>
In some cases more than one parasite (most often early or late trophozoites) can be seen within a single erythrocyte.


In some cases more than one early or late trophozoite may infect a single erythrocyte, the two are visible as entirely separate parasites. 


<gallery mode="nolines" widths=250px heights=250px>
File:double1.jpg|link={{filepath:double1.jpg}}
</gallery>
Note how the chromatin dot of the ring form is divided into two purple masses
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<span style="color:navy>'''Species significance '''</span>
<span style="color:navy>'''Species significance'''</span>


Most often considered a feature indicating ''P.falciparum'' infection, and is certainly frequent in this species (helping support) the diagnosis. The form should not however be considered as specific, and may occur in any species (and is also frequent for the ring forms of babesia).   
Most often considered a feature indicating ''P.falciparum'' infection, and is certainly frequent in that species where it can be used to support the diagnosis. However, the form should not considered as specific, and may occur in any species (and is also a frequent finding for babesia parasites).   


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<span style="color:navy>'''Additional images'''</span>
<span style="color:navy>'''Additional images'''</span>


Images of multiple parasites infecting  A. ''P.ovale'', B. ''P.vivax'', C. ''P.malariae'', and D. ''Babesia sp.''
<gallery mode="nolines" widths=200px heights=200px>
File:double2.jpg|A|link={{filepath:double2.jpg}}
File:double3.jpg|B|link={{filepath:double3.jpg}}
File:double4.jpg|C|link={{filepath:double4.jpg}}
</gallery>


Malaria double chromatin dot forms in: late trophozoite of ''P.ovale'' (A) an early trophozoite of ''P.vivax'' (B) amd eraly trophozoite of P.knowlesi (C)
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Revision as of 19:34, 15 March 2024



What are double infected cells?

In some cases more than one parasite (most often early or late trophozoites) can be seen within a single erythrocyte.


Note how the chromatin dot of the ring form is divided into two purple masses


Species significance

Most often considered a feature indicating P.falciparum infection, and is certainly frequent in that species where it can be used to support the diagnosis. However, the form should not considered as specific, and may occur in any species (and is also a frequent finding for babesia parasites).


Additional images

Malaria double chromatin dot forms in: late trophozoite of P.ovale (A) an early trophozoite of P.vivax (B) amd eraly trophozoite of P.knowlesi (C)