Skip to Main Navigation Skip to Page Content

An official website of the United States government The .gov means it’s official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site. The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely. ● Calendar & Events ● News & Media ● Get Involved ● Support

●What We Study ●Emerging Issues Coordination ●Health Effects Assessments ●Highlighted Research Topics ●NICEATM: Alternative Methods ●Testing Program ●Tox21 ●How We Work ●Overview ●Data Management ●Data & Resources ●Publications ●Who We Are ●Mission & Goals ●Advisory Board & Committees ●History & Milestones ●Organization https://ntp.niehs.nih.gov/go/searchhelp

(一) Home (二) Support (三) Search Help ●Support ● Accessibility Information ● Acronyms & Abbreviations ● Contact Us ● Search Help ● Back to NTP Search ● Site Map ● Visiting NTP ● Web Policies https://ntp.niehs.nih.gov/go/searchhelp

Search Help

10 Quick Tips to Help You Master Using NTP Search

Take a look at these tips to help you search NTP's website: (一)Searches are not case sensitive. Capitalizing your search terms isn't nessesary. Searching for "mchm" is the same as "MCHM." (二)Use checkboxes in the site panel to narrow your results. (三)Use quotation marks to search for a phrase instead of individual words (BSC "BPA Peer Review"). (四)Ignore words in your search by adding a minus sign (BPA -plastic). (五)Add words to your search by adding a plus sign (pathology +table). (六)Use an asterisk for unknown terms (BSC * review). (七)Use "and" to find pages or documents containing multiple search terms (hair dye and cancer). (八)Use "or" to find pages or documents that contain either of your search terms (MCHM or "West Virginia"). (九)Checkboxes in the same section means it will search both areas. For example: You select "Reports and Publications" and "BSC" in the same group to get results that are from both sections. (十)Checkboxes in separate section combines them in a search. For example: Selecting a range under "Year" and "Excel" in "Formats" will show results of all Excel files from the year selected.

Search Operators

Searching the NTP website is as simple as entering a few keywords or phrases (such as: pathology table rats benzene). Once entered, search will find documents containing those same words and phrases. If many results appear, it can be helpful to add symbols or search operators to help make your search more specific. Some examples and what they do are:

List of specific search operators
Search Operator	Example	Finds
+	pathology +table	Pages that have the word table with or without pathology
and	pathology and table	Pages containing both Pathology and table
"Not" or "-" exclusion	pathology -table; or Pathology not table	Pathology pages that exclude the word table
*	TR-10*	TR-10, TR-10a, TR-1029, etc.
" "	"pathology table"	Matches the exact words and spacing
Or	pathology or table	Pages that have either pathology or table

Special Characters & Patterns

If you're unsure how to search for a group of words, you can use the "@" operator to show combinations. Alternatively, using the "~" operator will turn off results that are synonyms to your keyword or phrase. ",", "@", "(",")", and "=" are special characters with specific meanings within our search system. Use "\" to remove a character's function.

Search Operator	Example	Finds
@	A B C D @1	Combines terms like: AB or AC or AD or BC or BD or CD
~	~PRC	Our search uses synonyms by default. adding ~ turns them off. For example: "~PRC" would search PRC, but not Project Review Committee
\	\,	"1-Amino-2 ,4-dibromoanthraquinone" might not return expected results, but『1-Amino-2 \,4-dibromoanthraquinone』will show more logical results
\	\( \)	" (o-Nitrophenyl )acetonitrile" might not return expected results, but『 \(o-Nitrophenyl \)acetonitrile』will show more logical results