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Fixatives & Cellophane Tape Swab
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Undergraduate 2
03/16/2021

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Term
Recommended ratio of fixative to the stool specimen.
Definition
3:1
Term
Concentration of formalin commonly used to preserve helminth eggs and larva
Definition
10% Formalin
Term
A fixative identified as a hybrid of both Formalin and PVA. It is mercury free but its adhesive property is quite poor.
Definition
SAF
Term
Fixatives contained in a Two Vial System are:
Definition
Formalin & PVA
Term
During the tape attachment, why do we have to leave a 1 cm space at a certain tip of the slide?
Definition
For labelling
Term
If by chance a frosted tape was utilized, a few drops of Xylene can be added under the edge of the tape.
Definition
True
Term
This method allows us to recover eggs from the perianal region.
Definition
Cellophane tape swab
Term
The female worm migrates every night to the perianal region. So it's safe to say that the you can perform the Cellophane Tape Swab within 2-3 consecutive days.
Definition
False
Term
It is an all purpose fixative. However, it is not suitable for permanent smears that are stained with Trichrome.
Definition
Formalin
Term
In respect to the Cellophane Tape Swab method, you don't have to worry about the sample collection since you can obtain the sample any time of the day.
Definition
False
Term
Serves as an alternative for mercury based fixatives. However, this can be more expensive than most fixatives available.
Definition
One Vial fixatives
Term
The Modified Polyvinyl Alcohol fixative utilizes these compounds as a substitute for the Mercuric chloride compound, except:
Definition
Barium sulfate
Term
The specimen must be fixed in the preservative for at least 10 minutes before processing.
Definition
False
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