Red cell size and shape: P.vivax: Difference between revisions
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During parasite | During parasite developmemt each species alters the red cell that they occupy. These changes differ between species causing characteristic changes to.red. cell size and red cell shape. For ''P.vivax'' these changes occur from a relatively early stage of parasite development (although the very earliest trophozoites may not yet show these features). These changes in size are retained at schizont and gametocyte stages. Both ''P.ovale'' and ''P.vivax'' cause red cells become progressively enlarged and distorted as the parasites develop. It may not be possible to distingish the species based on red cell appearances, but there are differences. | ||
Revision as of 17:56, 2 April 2024
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How is red cell size and shape affected as malaria develops?
This species tend to have the largest red cell size that becomes evident at quite and early stage; the typical shape is quite irregular fimbriation is not (generally) seen.
Trophozoites of P.vivax cause increase in size and distortion of red cells as the parasites mature. Here, the the early trophozoite (A) is enlarged but still retains a relatively undistorted elongated shape (similar to P.ovale); however the late form (B) is has a very irregular shape (note that unlike P.ovale the red cell is not fimbriated). |