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Analyzing a TIFF, Linking Analyzing a TIFF, Linking
Lanes, and Entering DataLanes, and Entering Data
Beth McGlincheyBeth McGlincheyApril 2011April 2011
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OverviewOverview
�� Copy a TIFF to the DatabaseCopy a TIFF to the Database
�� Analyze a TIFFAnalyze a TIFF
�� Convert a TIFF to Gel StripsConvert a TIFF to Gel Strips
�� Define CurvesDefine Curves�� Define CurvesDefine Curves
�� NormalizeNormalize
�� Mark BandsMark Bands
�� Link Lanes to Database EntriesLink Lanes to Database Entries
�� Add Demographic Information for IsolatesAdd Demographic Information for Isolates
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Open the DatabaseOpen the Database
Highlight the database of
interest
Click “Analyze”
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Open the DatabaseOpen the Database
Click “OK”
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Copy a TIFF to the DatabaseCopy a TIFF to the Database
Click on “Add new experiment file”
TIFFs should be named according to PulseNet protocol: LabID Two
Digit Year Three digit number (ex.
GA10001)
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Copy a TIFF to the DatabaseCopy a TIFF to the Database
Navigate to the Navigate to the desired TIFF, select it
and click “Open”
NOTE: the TIFF can also be saved to the images folder located on your computer
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Copy a TIFF to the databaseCopy a TIFF to the database
TIFF appears with Red “N” to denote
that it is new
Choose “No” to analyze TIFF
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TIFF SizeTIFF Size
�� High resolution: file becomes 3 times larger High resolution: file becomes 3 times larger (~1.2MB)(~1.2MB)
�� Low resolution: fewer pixels, which makes the Low resolution: fewer pixels, which makes the image and file smaller…requires less space to image and file smaller…requires less space to save (~300Kb)save (~300Kb)save (~300Kb)save (~300Kb)
�� Refer to the “Image Acquisition” document: Refer to the “Image Acquisition” document: �� CDC TeamCDC Team:: CDC CDC PulseNetPulseNet » Image Acquisition » » Image Acquisition » GelDocGelDoc XR Image Acquisition Instructions XR Image Acquisition Instructions AmendedAmended
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Highlight the TIFF
Analyze a TIFF Analyze a TIFF
Highlight the TIFF
Click the arrow to open or
double-click on TIFF
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Analyze a TIFFAnalyze a TIFF
Click “Edit Fingerprint Data”to analyze TIFF
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Analyze a TIFFAnalyze a TIFF
Select enzyme used on gel
Click “OK”
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Analysis Step 1: StripsAnalysis Step 1: StripsThe “Fingerprint Data” window opens
NOTE: the TIFF should be gray with black bands
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Analysis Step 1: StripsAnalysis Step 1: Strips
What if your TIFF is black with white bands?
Click the Settings buttonto correct
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Analysis Step 1: StripsAnalysis Step 1: Strips
Check the “Inverted values”
box and click “OK”“OK”
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Analysis Step 1: StripsAnalysis Step 1: Strips
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Analysis Step 1: StripsAnalysis Step 1: Strips
Use the green nodes to fit the green frame
tightly around the lanes
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Analysis Step 1: StripsAnalysis Step 1: Strips
Place the top of the frame just below the
wells
Make sure bottom line includes all
bands and is placed at the bottom of the
TIFF
TIFF will not normalize correctly otherwise
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Analysis Step 1: StripsAnalysis Step 1: Strips
If your TIFF has slanted lanes, hold down the SHIFT key as you adjust the green box
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Analysis Step 1: StripsAnalysis Step 1: Strips
To define lane strips, click “Auto Search Lanes”
Enter the number of Enter the number of lanes on the TIFF
and click “OK”
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Analysis Step 1: StripsAnalysis Step 1: Strips
The strips should surround the bands
To adjust width of all lanes, click “Edit Settings”
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Analysis Step 1: StripsAnalysis Step 1: Strips
Click on “Raw Data”
Adjust Thickness until
Click “OK”
Adjust Thickness until strips are wide enough
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Analysis Step 1: StripsAnalysis Step 1: Strips
To adjust individual strip width, click on “Make strip larger” “Make strip larger” or “Make strip smaller”
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Analysis Step 1: StripsAnalysis Step 1: Strips
The strips can be moved by clicking a
blue node and dragging the mouse. dragging the mouse. If the lane is crooked press the SHIFT key while dragging the
node to move a portion of the strip.
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Analysis Step 1: StripsAnalysis Step 1: Strips
NOTE: This is an important step to help determine doublet or
triplet resolution during band marking
3.2.1.
Make sure the strip does not: 1. cut off the edges of the lane, 2. include too much space, 3. but instead the strip should include all of the lane
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Analysis Step 1: StripsAnalysis Step 1: Strips
To adjust the brightness of the
TIFF, select Edit����“Edit tone
curve”
This step increases the contrast between
the bands and the background
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Analysis Step 1: StripsAnalysis Step 1: Strips
Click “Linear” to begin optimization
Before
Click “Enhance weak bands” and/or “Enhance dark bands” to further optimize gel
optimization
Click “OK”when done
After
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Analysis Step 1: StripsAnalysis Step 1: Strips
Save work
then click “Next” arrow or the
tab at the bottom of the screen
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Analysis Step 2: CurvesAnalysis Step 2: CurvesUse blue node to drag strip to best area of each
lane. Avoid artifacts, specks, etc.
Click “Next” arrow
*Peaks correspond with band intensity in gel lanes
Densitometriccurve*
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Analysis Step 3: NormalizationAnalysis Step 3: Normalization
1. Click on standard lane2. Click on the weightto designate standard lane
NOTE: For proper normalization, the 1st, last, and every 4th or 5th lane should have a standard
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Analysis Step 3: NormalizationAnalysis Step 3: Normalization
Click “Auto assign reference positions” to assign bands in standard lanes
NOTE: Only use this tool if gel has minimal
artifacts and ghost bands. If ghost bands
and artifacts are present manually assign bands.
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If bands were marked before auto assignment, check the “Keep existing
Analysis Step 3: NormalizationAnalysis Step 3: Normalization
the “Keep existing assignments” box
Click “OK”
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Analysis Step 3: NormalizationAnalysis Step 3: Normalization
NOTE: Not all visible bands in standard lanes will be marked
Toggle the button
“Show normalized view”
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Analysis Step 3: NormalizationAnalysis Step 3: Normalization
Click Normalization����“Show
distortion bars” to check normalization
Verify band assignments and good normalization
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Analysis Step 3: NormalizationAnalysis Step 3: Normalization
Results after proper normalization
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Analysis Step 3: NormalizationAnalysis Step 3: Normalization
Band assigned to wrong reference
position
Save work
Light colors indicate good normalization
Dark colors, especially in one part
of the gel indicate poor normalization, possibly due to an
incorrect band assignment
Save work
then click “Next” arrow
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DemoDemo
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1135 Kb
452.7 Kb
Fragment Sizes (in kilobases)
** ** **
PFGE Patterns of PFGE Patterns of E. coli E. coli O157:H7O157:H7
DNA “fingerprints”
76.8 Kb
33.3 Kb
216.9 Kb
*Global Reference Standard*Global Reference Standard
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Analysis Step 4: BandsAnalysis Step 4: Bands
To add a new band assignment, select the band and then
press the ENTER key
Hold down the TAB key while dragging the mouse to get better control of band placement or de-select “Snap to peaks”
under the “Edit” menu
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Analysis Step 4: BandsAnalysis Step 4: Bands
To delete a band assignment, select assignment, select the band and then
press the DELETE key
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Analysis Step 4: BandsAnalysis Step 4: Bands
To mark a band as uncertain select “Mark band(s) as uncertain” from the “Bands” menu
NOTE: use this function sparingly
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Analysis Step 4: BandsAnalysis Step 4: Bands
Click “Auto search bands”
NOTE: Only use
this tool if gel has minimal artifacts and ghost bands!
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Analysis Step 4: BandsAnalysis Step 4: Bands
Click “Search on all lanes” or on all lanes” or “Search on this
lane”
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Analysis Step 4: BandsAnalysis Step 4: Bands
Click Quantification����
“Band quantification” to check band assignments
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Analysis Step 4: BandsAnalysis Step 4: BandsIf “Auto search
bands” was used make sure to toggle back and forth using
the “Show normalized view”
icon
Add or delete bands where needed by
selecting the band and pressing the
ENTER or DELETE keys
icon
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If there is an indentation, then it’s marked as a doublet
If there’s a difference in color (light/dark can be resolved), then it’s marked as a doublet
Analysis Step 4: BandsAnalysis Step 4: BandsRefer to SOP “PND04 Gel Analysis Guidelines” for marking bands
then it’s marked as a doublet
If there is clear separation, then it’s marked as a doublet
If none of the above cases hold true, then it’s marked as
a singlet
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Analysis Step 4: BandsAnalysis Step 4: Bands
•Ghost bands should not be marked•The isolate should be rerun
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Analysis Step 4: BandsAnalysis Step 4: Bands
To return to showing full band marks Click
Quantification����“Band
quantification”
Save workonce all bands are marked correctly
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Analysis Step 4: BandsAnalysis Step 4: Bands
Click “Yes” to save changes
Click “No” to preserve default settings
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Tips for AnalysisTips for Analysis�� Use a printout of your TIFF to help identify bandsUse a printout of your TIFF to help identify bands
�� Use the zoom (in/out) buttons for ease of viewing Use the zoom (in/out) buttons for ease of viewing
bandsbands
�� To give better control for band placement on the gel, To give better control for band placement on the gel,
dede--select “select “snap to peakssnap to peaks” option from “” option from “EditEdit” ” dede--select “select “snap to peakssnap to peaks” option from “” option from “EditEdit” ”
menu, or hold down the menu, or hold down the <Tab><Tab> key while dragging key while dragging
the mouse within the gel stripthe mouse within the gel strip
�� When in doubt, mark bands MANUALLYWhen in doubt, mark bands MANUALLY
�� Remember to refer to SOP “PND04 Gel Analysis Remember to refer to SOP “PND04 Gel Analysis
Guidelines”Guidelines”
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Link Lanes to Database EntriesLink Lanes to Database Entries
If the gel contains lanes restricted with multiple enzymes, the fingerprint type for those lanes should be
changed before linking
Right-click on the lane and select “Change fingerprint type of lane”
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Link Lanes to Database EntriesLink Lanes to Database Entries
Choose the Choose the fingerprint
type
Click “OK”
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Link Lanes to Database EntriesLink Lanes to Database Entries
Lane 2 now has BlnI as the enzyme used during restriction
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Link Lanes to Database EntriesLink Lanes to Database Entries
Select the lane and click “Link lane to database entry”
NOTE: Do not link standard lanes
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Link Lanes to Database EntriesLink Lanes to Database Entries
Enter the isolate number or key and click “OK”
Since we are creating a new entry, select “Yes”
Continue for remaining lanes on the gel
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Reminders: Duplicate IsolatesReminders: Duplicate Isolates�� Do Do not upload duplicate database entriesnot upload duplicate database entries
�� If there are multiple picks from one culture, we recommend If there are multiple picks from one culture, we recommend labeling them 123a, 123b, 123c, or in a similar fashionlabeling them 123a, 123b, 123c, or in a similar fashion�� Only upload those with different PFGE patternsOnly upload those with different PFGE patterns
�� When a repeat isolate is added into your database, BioNumerics When a repeat isolate is added into your database, BioNumerics automatically adds “/#” to the end of the automatically adds “/#” to the end of the keykey
�� If you are reIf you are re--uploading an unsatisfactory pattern, contact CDC uploading an unsatisfactory pattern, contact CDC �� If you are reIf you are re--uploading an unsatisfactory pattern, contact CDC uploading an unsatisfactory pattern, contact CDC before uploading so the previous pattern can be deleted before uploading so the previous pattern can be deleted beforehand and the better pattern confirmedbeforehand and the better pattern confirmed
�� If you upload a pattern that has already been named and If you upload a pattern that has already been named and confirmed, you will receive an error message. Contact CDC for confirmed, you will receive an error message. Contact CDC for assistance in completing this process.assistance in completing this process.
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Add Text Data for IsolatesAdd Text Data for Isolates
To enter demographic information,
double-click on the key
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Add Text Data for IsolatesAdd Text Data for Isolates
Click on “Edit database fields” to enter specific demographic information
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Add Text Data for IsolatesAdd Text Data for Isolates
Use pull down menus as much as possible to prevent mistakes
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Add Text Data: Character DataAdd Text Data: Character Data
Character Data can also be added to the demographic information
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Add Text Data: Character DataAdd Text Data: Character Data
Use pull down menus to enter appropriate data
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Add Text Data for IsolatesAdd Text Data for Isolates
Check info: make note of the format of
Click “OK”
the format of some
information
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Add Text Data for IsolatesAdd Text Data for Isolates
Age Format:•Enter age using the “Entry properties” screen
•Enter days if •Enter days if less than one month and enter months if less than one year
•No birth dates
Date format: YYYY-MM-DD (IsolateDate, ReceivedDate, etc.)
Ex: 2011-03-04
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Reminders: Text Data for IsolatesReminders: Text Data for Isolates
�� Provide as much information as possibleProvide as much information as possible�� Species/Serotype: do Species/Serotype: do not leave this field not leave this field blank (use blank (use serotype pendingserotype pending, , undetermined, isolate undetermined, isolate to to CDC) pattern CDC) pattern name cannot be “confirmed” until this is enteredname cannot be “confirmed” until this is entered
�� Source Source State: extremely State: extremely important for initial important for initial investigationinvestigation�� Source City, County if knownSource City, County if known�� Source Type: Source Type: mustmust be one of these five: Animal, Human, be one of these five: Animal, Human, �� Source Type: Source Type: mustmust be one of these five: Animal, Human, be one of these five: Animal, Human, Environment or Environmental, Environment or Environmental, Food, Food, UnknownUnknown
�� Source Source Site: i.eSite: i.e. stool, urine, blood, etc. stool, urine, blood, etc..�� Patient Age and SexPatient Age and Sex�� Dates: Isolation Dates: Isolation and and ReceivedReceived�� Type Details: use to provide more information about Type Details: use to provide more information about source sitesource site
�� If importing, remember to check all data for accuracyIf importing, remember to check all data for accuracy
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DemoDemo
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Questions?Questions?
Thank you for your attentionThe findings and conclusions in this presentation are those of the author and do not necessarily represent the views of the Centers for Disease
Control and Prevention
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Exercise 1Exercise 1Exercise 1Exercise 1