USMLE Step 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Ziehl Neelsen | acid fast bacteria, i.e. Mycobacterium tuberculosis
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| India Ink | Cryptococcus neoformans
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| Giemsa | Borrelia, Plasmodium, Trypanosomes, Chlamydia also blood smears
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| Periodic Acid-Schiff (PAS) | tests for glycogen & mucopolysaccharides, used to dx Whipple's disease from the bacterium Tropheryma whipplei
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| Prussian blue | blue dye test to detect Fe
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| Congo red | stains amyloid red & causes amyloid to take up apple-green birefringence when viewed under polarized light microscope
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| Osmic acid | fixative & stain for EM
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| Gram stain | + for thick peptidoglycan (blue-violet) vs. - for thin peptidoglycan (pink-red)
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
jerrica_08
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