Introduction to Diagnostic Medical Parasitology
Plasmodium falciparum
Rings; accolé form
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/malaria/plasmodium-falciparum/P.falc.Ringe.100x__006_001_004_006_002_002_002__005.jpg/jcr:content/P.falc.Ringe.100x__006_001_004_006_002_002_002__005.jpg)
Rings; accolé form
-Delicate rings
- May have two dots of chromatin
- Apliqué or accolé forms (looks like they are attached to erythrocyte membrane)
- All sizes of RBCs
Rings; multiple infection
Rings; multiple infection
- Delicate rings
- May have two dots of chromatin
- Apliqué or accolé forms (looks like they are attached to erythrocyte membrane)
- Multiple infection more frequent
- All sizes of RBCs
Rings
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/malaria/plasmodium-falciparum/Ausstrich-100er.2.jpg/jcr:content/Ausstrich%20100er.2.jpg)
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/malaria/plasmodium-falciparum/P.falc.Ringe.100x__006_001_004_006_002_002_002__003.jpg/jcr:content/P.falc.Ringe.100x__006_001_004_006_002_002_002__003.jpg)
Rings
- Delicate rings
- May have two dots of chromatin
- Apliqué or accolé forms (looks like they are attached to erythrocyte membrane)
- All sizes of RBCs
Older trophozoite with Maurer's dots
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/malaria/plasmodium-falciparum/P.falc.Maurer.100x__006_001_004_006_002_002_002__006_002.jpg/jcr:content/P.falc.Maurer.100x__006_001_004_006_002_002_002__006_002.jpg)
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/malaria/plasmodium-falciparum/P.falc.Maurer.100x__006_001_004_006_002_002_002__006_002_004.jpg/jcr:content/P.falc.Maurer.100x__006_001_004_006_002_002_002__006_002_004.jpg)
Older trophozoite with Maurer's dots
- In older stages of the trophozoite
- There may appear the Maurer's dots
- They are only visible
- If there was correct pH (7.2) in the staining-solution-buffer
Macrogametocyte
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/malaria/plasmodium-falciparum/P.falc.Makro.100x__006_001_004_006_002_002_002__006_002_004__002.jpg0/jcr:content/P.falc.Makro.100x__006_001_004_006_002_002_002__006_002_004__002.jpg)
Macrogametocyte
- The gametocytes of P. falciparum have banana form
- The chromatin mass of the macrogametocyte is compact
- Dark red and in the center
-The cytoplasm is blue to violet
- The Pigment is concentrated round chromatin
Microgametocyte
![](/.imaging/mte/default-theme/parasiteImage/dam/parasites/protozoa/malaria/plasmodium-falciparum/P.falc.Mikro.100x__006_001_004_006_002_002_002__006_002_004_.jpg/jcr:content/P.falc.Mikro.100x__006_001_004_006_002_002_002__006_002_004_.jpg)
Microgametocyte
- The gametocytes of P. falciparum have banana form
- The form is more stumpy than in the macogametocyte
- Chromatin mass larger
- More diffuse
- Loose
- Light red fragments and filaments
- Cytoplasm from violet to pink
- Always more reddish than in macrogametocyte
- Pigment is scattered.