๐ฆ MICROBIOLOGY๐งฌ
Questions 14โ21 ๐ป๐ปโคต๏ธ๐ป๐ป & Answers Tomorrow
19. Plate 19 shows an organism isolated from an eye wash of
a patient with a cornea infection who had been wearing contact lenses for the past 2 years.
What is the name of the causative agent?
๐. Naegleria spp.
๐. Acanthamoeba spp.
๐. Entamoeba histolytica
โค. Trichomonas vaginalis
#Parasitology
@MicroMLS
a patient with a cornea infection who had been wearing contact lenses for the past 2 years.
What is the name of the causative agent?
๐. Naegleria spp.
๐. Acanthamoeba spp.
๐. Entamoeba histolytica
โค. Trichomonas vaginalis
#Parasitology
@MicroMLS
๐ฆ MICROBIOLOGY๐งฌ
Questions 14โ21 ๐ป๐ปโคต๏ธ๐ป๐ป & Answers Tomorrow
20. Plate 20 is a Wrightโs-stained peripheral blood film, 1,000ร.
Which malarial stage is present in
the RBC in the center of the plate?
๐. Ring trophozoite of Plasmodium vivax
๐. Mature trophozoite of Plasmodium malariae
๐. Macrogametocyte stage of Plasmodium
falciparum
โค. Mature gametocyte stage of Plasmodium ovale
#Parasitology
@LabMed2016
Which malarial stage is present in
the RBC in the center of the plate?
๐. Ring trophozoite of Plasmodium vivax
๐. Mature trophozoite of Plasmodium malariae
๐. Macrogametocyte stage of Plasmodium
falciparum
โค. Mature gametocyte stage of Plasmodium ovale
#Parasitology
@LabMed2016
๐ฆ MICROBIOLOGY๐งฌ
Questions 14โ21 ๐ป๐ปโคต๏ธ๐ป๐ป & Answers Tomorrow
21. Plate 21 is a modified acid-fast stain with malachite green counterstain of a stool specimen,
1,000ร magnification.
The oocysts seen in this field are approximately 5 ฮผ in diameter. Which organism is present?
๐. Isospora belli
๐. Cryptosporidium parvum
๐. Cyclospora spp.
โค. Sarcocystis spp.
#Parasitology
@MicroMLS
1,000ร magnification.
The oocysts seen in this field are approximately 5 ฮผ in diameter. Which organism is present?
๐. Isospora belli
๐. Cryptosporidium parvum
๐. Cyclospora spp.
โค. Sarcocystis spp.
#Parasitology
@MicroMLS
๐ฆ MICROBIOLOGY๐งฌ
Questions 14โ21 ๐ป๐ปโคต๏ธ๐ป๐ป & Answers Tomorrow
๐ดAnswers to Questions 14โ21
14. ๐ Ascaris ova are large and oval, usually measuring
50โ75 ฮผ long by 35โ50 ฮผ wide. They are often bile stained and may have a thick shell with a coarse covering (corticated).
This egg demonstrates a
contracted embryo, leaving space between the shell and the embryo at the opposing poles.
This indicates that the egg is fertilized.
http://bit.ly/2mRa3re
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
15. ๐ Hookworm ova are approximately 60โ75 ฮผ in length and 35โ40 ฮผ in width.
They have a thin outer shell usually containing an unembryonated or partly embryonated egg within.
The ova of Necator and Ancylostoma cannot be differentiated from one another.
Threadworm (Strongyloides) produces similar ova, but these hatch in the intestine, releasing
the rhabditoid larvae that are found in the feces.
Pinworm (Enterobius) ova are approximately the same size but are more elongated and flat on one side.
Whipworm (Trichuris) ova are smaller and thick walled with mucus plugs at both ends.
http://bit.ly/2mpJ0Y9
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
16. โ๐ C. sinensis produces small, bile-stained ova approximately 25โ35 ฮผ in length and 10โ20 ฮผ in width.
Ova have a collar (shoulder) on both sides of the operculum and a knob at the end opposite the operculum.
Fasciola, Paragonimus, and Fasciolopsis all produce large, yellow-brown operculated ova.
http://bit.ly/2mpolTQ
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
17. โ๐ P. westermani produces large, operculated ova measuring approximately 80โ100 ฮผ in length
and 50โ70 ฮผ in width.
They are yellow-brown and nonembryonated.
Metagonimus and Opisthorchis ova are small ova resembling
Clonorchis.
Fasciola produces ova that are also yellow-brown, operculated, and unembryonated.
The ova are larger than Paragonimus and lack the small shoulders adjacent to the operculum of Paragonimus ova.
http://bit.ly/2mR7RAd
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
18. โ๐ This field shows long helical bacteria between red blood cells (RBCs) of normal size and color.
These spirochetes are sometimes seen in the blood of patients suffering from the febrile septic phase of infection with Borrelia or Leptospira spp.
The former are more commonly encountered in differential
exams, especially in patients infected with Borrelia recurrentis and other species that cause relapsing fever.
Borrelia burgdorferi, the causative agent of Lyme disease, is rarely seen in Wrightโs-stained blood
films and is usually diagnosed by enzyme-linked immunosorbent assay (ELISA) and other serological methods.
19. โ๐ This is a large trophozoite with spiculated cytoplasm characteristic of Acanthamoeba.
Eye infections caused by this organism have been documented in contact lens wearers who do not
properly disinfect lenses. Acanthamoeba spp.
are large trophozoites measuring 25โ50 ฮผ.
They may also cause primary amoebic meningoencephalitis,
although they are isolated less often than Naegleria in the cerebrospinal fluid (CSF) of patients with this disease.
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
20. โ๐ The infected RBC demonstrates enlarged
amoeba-like cytoplasm and Schรผffnerโs dots, which are characteristic of P. vivax and ovale.
The parasite is at the ring-form trophozoite stage.
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
21. โ๐ All of the organisms listed are coccidian parasites that cause diarrhea, especially in immunodeficient patients such as those with AIDS.
Cryptosporidium produces the smallest oocysts (half the size of Cyclospora, which is the next smallest) and is visible in stools using either the acid-fast or immunofluorescent stainingtechniques.
The oocysts are round, about 5 ฮผ in diameter, and deep pink.
#Parasitology
@MicroMLS
โ ๐ธููุงูุถู ุงู ููุง:๐
๐ปโจ๐ปโจ๐ปโจ๐ปโจ๐ป
https://telegram.me/joinchat/AAAAAD-9_z56fB6h3kDmTA
๐โโโ @LabMed2016 โโโ๐
14. ๐ Ascaris ova are large and oval, usually measuring
50โ75 ฮผ long by 35โ50 ฮผ wide. They are often bile stained and may have a thick shell with a coarse covering (corticated).
This egg demonstrates a
contracted embryo, leaving space between the shell and the embryo at the opposing poles.
This indicates that the egg is fertilized.
http://bit.ly/2mRa3re
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
15. ๐ Hookworm ova are approximately 60โ75 ฮผ in length and 35โ40 ฮผ in width.
They have a thin outer shell usually containing an unembryonated or partly embryonated egg within.
The ova of Necator and Ancylostoma cannot be differentiated from one another.
Threadworm (Strongyloides) produces similar ova, but these hatch in the intestine, releasing
the rhabditoid larvae that are found in the feces.
Pinworm (Enterobius) ova are approximately the same size but are more elongated and flat on one side.
Whipworm (Trichuris) ova are smaller and thick walled with mucus plugs at both ends.
http://bit.ly/2mpJ0Y9
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
16. โ๐ C. sinensis produces small, bile-stained ova approximately 25โ35 ฮผ in length and 10โ20 ฮผ in width.
Ova have a collar (shoulder) on both sides of the operculum and a knob at the end opposite the operculum.
Fasciola, Paragonimus, and Fasciolopsis all produce large, yellow-brown operculated ova.
http://bit.ly/2mpolTQ
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
17. โ๐ P. westermani produces large, operculated ova measuring approximately 80โ100 ฮผ in length
and 50โ70 ฮผ in width.
They are yellow-brown and nonembryonated.
Metagonimus and Opisthorchis ova are small ova resembling
Clonorchis.
Fasciola produces ova that are also yellow-brown, operculated, and unembryonated.
The ova are larger than Paragonimus and lack the small shoulders adjacent to the operculum of Paragonimus ova.
http://bit.ly/2mR7RAd
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
18. โ๐ This field shows long helical bacteria between red blood cells (RBCs) of normal size and color.
These spirochetes are sometimes seen in the blood of patients suffering from the febrile septic phase of infection with Borrelia or Leptospira spp.
The former are more commonly encountered in differential
exams, especially in patients infected with Borrelia recurrentis and other species that cause relapsing fever.
Borrelia burgdorferi, the causative agent of Lyme disease, is rarely seen in Wrightโs-stained blood
films and is usually diagnosed by enzyme-linked immunosorbent assay (ELISA) and other serological methods.
19. โ๐ This is a large trophozoite with spiculated cytoplasm characteristic of Acanthamoeba.
Eye infections caused by this organism have been documented in contact lens wearers who do not
properly disinfect lenses. Acanthamoeba spp.
are large trophozoites measuring 25โ50 ฮผ.
They may also cause primary amoebic meningoencephalitis,
although they are isolated less often than Naegleria in the cerebrospinal fluid (CSF) of patients with this disease.
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
20. โ๐ The infected RBC demonstrates enlarged
amoeba-like cytoplasm and Schรผffnerโs dots, which are characteristic of P. vivax and ovale.
The parasite is at the ring-form trophozoite stage.
โขโโโโโ๐ฑ๐๐ฑโโโโโโข
21. โ๐ All of the organisms listed are coccidian parasites that cause diarrhea, especially in immunodeficient patients such as those with AIDS.
Cryptosporidium produces the smallest oocysts (half the size of Cyclospora, which is the next smallest) and is visible in stools using either the acid-fast or immunofluorescent stainingtechniques.
The oocysts are round, about 5 ฮผ in diameter, and deep pink.
#Parasitology
@MicroMLS
โ ๐ธููุงูุถู ุงู ููุง:๐
๐ปโจ๐ปโจ๐ปโจ๐ปโจ๐ป
https://telegram.me/joinchat/AAAAAD-9_z56fB6h3kDmTA
๐โโโ @LabMed2016 โโโ๐
ุชุดุฑูุญ ุฎููู ููุถูุญ ุงููุฑู ุจูู ุงูุจูุชูุฑูุง ุงูุณุงูุจุฉ ุงูุฌุฑุงู
Ve- ูุงูู
ูุฌุจุฉ ุงูุฌุฑุงู
Ve+.
@MicroMLS
@MicroMLS
๐ดู
ุฎุทุทโก ุชูุถูุญู ูุณุงุนุฏู ูู ููู
ุจูุชูุฑูุง ุณุงูุจุฉ ุงูุฌุฑุงู
Gram Negative -ve
http://bit.ly/2mR7RAd
Gram Negative -ve
http://bit.ly/2mR7RAd
๐ตู
ุฎุทุทโ ุชูุถูุญู ูุณุงุนุฏู ูู ููู
ุจูุชูุฑูุง ู
ูุฌุจุฉ ุงูุฌุฑุงู
Gram Positive +ve
@MicroMLS
Gram Positive +ve
@MicroMLS
๐ฆ MICROBIOLOGY๐งฌ
@MicroMLS
Types of asexual mold spores.
(a) Sporangiospores:
(1) Absidia,
(2) Syncephalastrum.
(b) Conidial variations:
(1) arthrospores (e.g., Coccidioides),
(2) chlamydospores and blastospores (e.g., Candida albicans),
(3) phialospores (e.g., Aspergillus),
(4) macroconidia and microconidia (e.g., Microsporum), and
(5) porospores (e.g., Alternaria).
โ ๐ธููุงูุถู ุงู ููุง:๐
๐ปโจ๐ปโจ๐ปโจ๐ปโจ๐ป
https://telegram.me/joinchat/AAAAAD-9_z56fB6h3kDmTA
(a) Sporangiospores:
(1) Absidia,
(2) Syncephalastrum.
(b) Conidial variations:
(1) arthrospores (e.g., Coccidioides),
(2) chlamydospores and blastospores (e.g., Candida albicans),
(3) phialospores (e.g., Aspergillus),
(4) macroconidia and microconidia (e.g., Microsporum), and
(5) porospores (e.g., Alternaria).
โ ๐ธููุงูุถู ุงู ููุง:๐
๐ปโจ๐ปโจ๐ปโจ๐ปโจ๐ป
https://telegram.me/joinchat/AAAAAD-9_z56fB6h3kDmTA
ู
ุฎุทุท ุฑุงุฆุน ููู ุงูุจูุชูุฑูุง ุงููุฑููุฉ COCCI
@MicroMLS
@MicroMLS
Types of microbiological stains.
(a) Simple stains.
(b) Differential stains:
Gram, acid-fast, and spore.
(c) Special stains:
capsule and flagellar.
http://yeo.ir/3zC
(a) Simple stains.
(b) Differential stains:
Gram, acid-fast, and spore.
(c) Special stains:
capsule and flagellar.
http://yeo.ir/3zC