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| [Cyclospora cayetanensis] |
Cyclospora cayetanensis oocysts are spherical, 7.5-10 µm in diameter and unsporulated when passed in feces. Sporulation in the environment is temperature-dependent and may take one to several weeks for an infective oocyst to contain two sporocysts, each containing two sporozoites. Oocysts of C. cayetanensis will autofluoresce under ultraviolet (UV) microscopy.
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A |
B |
A, B: Oocysts of C. cayetanensis stained with safranin (SAF).
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C |
D |
C, D: Oocysts of C. cayetanensis stained with safranin (SAF).
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E |
F |
E: A pair of
oocysts of C. cayetanensis stained with safranin (SAF).
F:
Oocyst of C. cayetanensis (yellow arrow) along
with an oocyst of Cryptosporidium parvum (red arrow), stained
with safranin (SAF). Cryptosporidium spp. also stain with
the safranin and modified acid-fast stains.
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