Band form PM: Difference between revisions

Latest revision as of 09:31, 23 December 2024

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Band form An early or late trophozoite form that is very elongated and extends close to, or entirely across, the diameter of the erythocyte. The form is frequent in P.malariae and P.knowlesi infections and can support the identification of either species - although other features must fit. Rarely, forms resembling a band may occur in other species. Band forms in P.malariae The image sequence shows developing elongated forms and a fully formed band in P.malariae. Band appearances in other species: A B Partial band trophozoites seen in P.knowlesi where such forms are relatively frequent (A). Also a rather broad and solid band in P.ovale (note the James's dots in the cytoplasm) (B).

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 {| class="wikitable" style="widthe:90%; border-style: solid; border-width: 4px; border-color:teal"
-|colspan="1" style = "font-size:140%; color:black; background: FFFAFA"|<span style="color:black>'''Central chromatin dot form'''</span>
+|colspan="1" style = "font-size:140%; color:black; background: FFFAFA"|<span style="color:black>'''Band form'''</span>
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-<span style="font-size:90%">The dots of different species represent parasite proteins that modify red cell function in a range of ways to support parasite development, immun evasion or virulence. Their precise functions are ill defined, but their appearances have value in distinguishing the different species of parasite. The dots require a well-stained specimen to be easily seen!</span>
+<span style="font-size:90%">An early or late trophozoite form that is very elongated and extends close to, or entirely across, the diameter of the erythocyte. The form is frequent in  ''P.malariae'' and ''P.knowlesi'' infections and can support the identification of either species  - although other features must fit. Rarely, forms resembling a band may occur in other species.</span>
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-<span style="font-size:90%>'''Schüffner's dots''' (P.vivax) and '''James' dots)''' (''P.ovale'') become apparent during the early trophzoite as faint dots then to be easily seen in later stages. These two forms of dots are morphologically indistinguishable as frequent evenly-distrubuted round dots od similar size.</span>
-<gallery mode="nolines" widths="220px" heights="220px" >
-File:Schuffner_dots.jpg|link={{filepath:Schuffner_dots.jpg}}
-</gallery>
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+<span style="font-size:90%>'''Band forms in ''P.malariae'' '''</span>
-An early or late trophozoite form that is very elongated and extends close to, or entirely across, the diameter of the erythocyte. The form is frequent in  ''P.malariae'' and ''P.knowlesi'' infections and can support the identification of either species  - although other features must fit. Rarely, forms resembling a band may occur in other species.
+<gallery mode="nolines" widths="220px" heights="220px" >
+File:PMBand1.jpg|link={{filepath:PMBand1.jpg}}
+File:PMBand2.jpg|link={{filepath:PMBand2.jpg}}
+File:PMBand3.jpg|link={{filepath:PMBand3.jpg}}
+</gallery>
+</br>
+<span style="font-size:90%">''The image sequence shows developing elongated forms and a fully formed band in P.malariae.''</span>
+----
-<span style="color:navy>'''Additional images'''</span>
+<span style="font-size:90%>'''Band appearances in other species:'''</span>
 <gallery mode="nolines" widths="220px" heights="220px" >
-File:MBa5.jpg|A|link={{filepath:MBa5.jpg}}
+File:PKBand.jpg|A|link={{filepath:PKBand.jpg}}
-File:MBa4.jpg|B|link={{filepath:MBa4.jpg}}
+File:PVBa1.jpg|B|link={{filepath:PVBa1.jpg}}
 </gallery>
-A partial band trophozoite of ''P.knowlesi'' (A) and a rather broad and solid band in ''P.ovale'' (note the James's dots in the cytoplasm)(B).
+<span style="font-size:90%>''Partial band trophozoites seen in P.knowlesi where such forms are relatively frequent (A). Also a rather broad and solid band in P.ovale (note the James's dots in the cytoplasm) (B).</span>
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Band form PM: Difference between revisions

From MalariaETC

Latest revision as of 09:31, 23 December 2024