Last Updated: November 14, 2008
The NLM Gateway is a Web-based system that lets users search
simultaneously in multiple retrieval systems at the U.S. National
Library of Medicine (NLM). It allows users of NLM services to
initiate searches from one Web interface, providing "one-stop searching"
for many of NLM's information resources or databases. It is being
developed by the Lister Hill
National Center for Biomedical Communications (LHNCBC) at the
National Library of Medicine (NLM),
a part of the National Institutes of Health
One target audience for the Gateway is the Internet user who is new
to NLM's online resources and does not know what information is available
there or how best to search for it. This audience may include physicians
and other health care providers, researchers, librarians, students, and
increasingly, patients, their families, and the public. Other users may
find the Gateway useful for an overall search of NLM's information
resources. Some searchers may locate what they need immediately, while
others will utilize the Gateway as an adjunct tool to other NLM search
services such as PubMed® and MedlinePlus®.
System and Data Coverage
The Gateway connects users with multiple NLM retrieval systems
and also provides a search interface for meeting abstracts. Please note,
other NLM systems (e.g., PubMed, NLM Catalog, MedlinePlus) will
retain their own search interfaces and will continue to be publicly
The Gateway will provide access to the information found in an
increasing number of NLM retrieval systems in several phases. Currently,
users are able to access information from the collections in the table
below. The Meeting Abstracts collection is found only in the Gateway.
||journal citations, 1950 to present|
||records for books, audiovisuals, serials|
||full text biomedical books|
||Developmental and Reproductive Toxicology references|
||meeting abstracts on selected subjects|
Consumer Health Resources
|MedlinePlus Health Topics
||health information from NIH and other sources|
|MedlinePlus Drug Information
||generic and brand name drug information|
|MedlinePlus Medical Encyclopedia
||articles about diseases, tests, symptoms,
injuries and surgeries|
|MedlinePlus Current Health News
||late-breaking stories about medicine and health|
|MedlinePlus Other Resources
||databases, organizations and directories|
||information about clinical research studies|
||directory of health organizations|
|Genetics Home Reference
||information about genetic conditions and genes|
|Household Products Database
||information about common household products|
Other Information Resources
||Health Services Research Projects in Progress|
||Online Mendelian Inheritance in Man (catalog of human genes)|
||Hazardous Substances Data Bank|
||Integrated Risk Information System (toxicology)|
||International Toxicity Estimates for Risk|
||Genetic Toxicology (Mutagenicity)|
||Chemical Carcinogenesis Research Information System|
|Profiles in Science
||archival collections of scientists|
MEDLINE fact sheet;
PubMed fact sheet)
(Medical Literature Analysis and Retrieval System Online) is the U.S.
National Library of Medicine's (NLM) premier bibliographic database that contains
over 16 million references to journal articles in life sciences with a
concentration on biomedicine. PubMed provides free access to MEDLINE, and includes additional
citations such as in-process citations and OLDMEDLINE citations that have not yet been converted to
The NLM Catalog
is an alternative search interface to NLM bibliographic
records for journals, books, audiovisuals, computer software, electronic
resources, and other materials that is available to users under the NCBI
is a growing collection of full text biomedical books, as well as additional
resources such as GeneReviews and Health Services/Technology Assessment Text (HSTAT).
is the National Library of Medicine's (NLM) bibliographic database for
toxicology, a varied science encompassing many disciplines. TOXLINE records
provide bibliographic information covering the biochemical, pharmacological,
physiological, and toxicological effects of drugs and other chemicals.
TOXLINE Subset complements TOXLINE Core (part of MEDLINE) with references
from an assortment of specialized journals and other sources.
is a bibliographic database covering teratology and other aspects of
developmental and reproductive toxicology.
is the National Library of Medicine's online collection of abstracts
from HIV/AIDS, Health Services Research, and Space Life Sciences meetings.
is the National Library of Medicine's web site for consumer
health information. MedlinePlus includes:
- health topics with links to health information from NIH
and other authoritative sources and also include a MEDLINE/PubMed®
search, current news items about the topic, and links to related topics.
Health topics include interactive health tutorials that use animated graphics
and sound to explain conditions and procedures in easy-to-read language.
- information for prescription and over-the-counter medicines, plus herbs.
- a medical encyclopedia containing an extensive collection of medical
images as well as 4,000 articles about diseases, tests, symptoms, injuries
- current health news with late-breaking stories about medicine and health.
- other resources including organizations providing health information,
consumer health libraries providing services to local residents, resources beyond
MedlinePlus covering special topics and collections,
and directories of doctors, dentists and hospitals.
provides patients, family members, health care
professionals, and members of the public easy access to information on
clinical trials for a wide range of diseases and conditions.
(Directory of Information Resources Online) is the National
Library of Medicine's online database containing location and descriptive
information about a wide variety of information resources including
organizations, research resources, projects, and databases concerned
with health and biomedicine.
Genetics Home Reference
is the National Library of Medicine's Web site
for consumer information about genetic conditions and the genes or chromosomes
responsible for those conditions.
Household Products Database
Household Products Database is a consumer's guide that provides
information on the potential health effects of chemicals contained in
more than 7,000 common household products used inside and around the
is a database providing access to ongoing grants and contracts in health
services research. It contains descriptions of research in progress funded
by federal and private grants and contracts for use by policy makers, managers,
clinicians and other decision makers.
(Online Mendelian Inheritance in Man) is a continuously updated catalog of
human genes and genetic disorders.
is a toxicology data file focused on the toxicology of potentially
hazardous chemicals. It is enhanced with information on human exposure,
industrial hygiene, emergency handling procedures, environmental fate,
regulatory requirements, and related areas.
(Integrated Risk Information System) is a toxicology data file
containing data in support of human health risk assessment.
(International Toxicity Estimates for Risk) is a toxicology data file
containing data in support of human health risk assessments.
is a toxicology data file containing genetic toxicology (mutagenicity) test data,
resulting from expert peer review of the open scientific literature, on over
(Chemical Carcinogenesis Research Information System) is a toxicology
data file containing over 9,000 chemical records with carcinogenicity,
mutagenicity, tumor promotion, and tumor inhibition test results.
Profiles in Science
provides access to the archival collections of leaders in
biomedical research and public health.
NLM does not claim the copyright on the contents of these collections;
the data providers often do. NLM provides no legal advice concerning
use of copyrighted materials. This advice should be sought from your
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