Segmenting Tertian Malarial Parasites on Red Corpuscles Showing Little or No Loss of Hemoglobin Substance. Evidence of Migration
نویسنده
چکیده
1. Malarial parasites destroy more than one red corpuscle, migrating to another as soon as one is destroyed. 2. Pigmented segmenting parasites attached to red corpuscles whose hemoglobin is intact or nearly so are prima facie evidence of migration. 3. Infected corpuscles in tertian infections may be enlarged as a result of the large size of the attached parasite as well as by parasitic action. 4. The young parasites resulting from the segmenting bodies attached to healthy red corpuscles usually attach themselves independently to the infected corpuscle and remain there until the corpuscle is destroyed.
منابع مشابه
A Stage in the Migration of the Adult Tertian Malarial Parasite. Evidence of the Extracellular Relation of the Parasite to the Red Corpuscle
1. What appear to be certain definite stages in the migration of the malarial parasite from red corpuscle to red corpuscle may be demonstrated by thorough and persistent observations,-not minutes spent on each specimen, but many hours. 2. The migration of the malarial parasite from red corpuscle to red corpuscle gives a reasonable explanation of the loss of red corpuscles which cannot be accoun...
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1. The malarial parasite is extracellular throughout its entire life cycle; that is, when it is not free in the blood serum, it is attached to the external surface of the red corpuscle. 2. Adult parasites follow the same procedure in attaching themselves to the outer surface of the red corpuscles as do the young parasites. 3. Adult parasites are most frequently seen attached to surface corpuscu...
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The anemia in malarial infections is explained by the fact that each parasite destroys several red corpuscles. Reduction of hemoglobin out of proportion to the loss of red corpuscles is explained by the fact that there is always a partial loss of hemoglobin in certain of the surviving corpuscles due to parasitic action. Migration of parasites occurs in all aestivo-autumnal infections. If one wi...
متن کاملFree Malarial Parasites and the Effect of the Migration of the Parasites of Tertian Malarial Infections
1. The malarial parasite is extracellular throughout its life cycle and migrates from red corpuscle to red corpuscle destroying each before it abandons it; in the brief intervals between, the parasite is free in the blood serum; it does not remain long free, but almost immediately attaches itself to another red corpuscle by means of delicate pseudopodia. 2. The compact form of the tertian paras...
متن کاملÆstivo-autumnal Malaria. the Extracellular Relation of the Crescentic Bodies to the Red Corpuscle and Their Method of Securing Attachment
AEstivo-autumnal parasites, including the crescentic bodies, are always extracellular; that is, they are attached to the external surface of the red corpuscles. Crescentic bodies attach themselves to the red corpuscles just as the younger parasites do, by encircling, with their cytoplasm, mounds of hemoglobin substance. These hemoglobin mounds may be seen protruding through various portions of ...
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ورودعنوان ژورنال:
- The Journal of Experimental Medicine
دوره 32 شماره
صفحات -
تاریخ انتشار 2003