MEDLARS System

The ETIC file has been divided into three different portions by the MEDLARS system. The ETIC citations from 1981 to the current date are found on TOXLINE. References dated 1976 to 1980 appear in a separate file entitled T0XBACK76, while those citations through 1975 and previous years are found in T0XBACK65. Search strategy on these three files is identical. Terms may be entered singly or may be combined by means of the Boolean operators AND, OR, and AND NOT. 

One of the largest online bibliographic sources for toxicology information, these databases contain over 3 million citations to all areas of toxicology. TOXLINE references are drawn from various sources grouped into two parts - TOXLINE Core and TOXLINE Special. A standard search of TOXLINE retrieves records from both subsets. Users can also limit retrieval to only one. Both files are available on the NLM MEDLARS system (DIALOG on CD through Silver Platter). 

The MEDLARS System An astoundingly complete scientific data retrieval system, MEDLARS, is the computerized literature retrieval service of... 

A more exhaustive search for cognate substructures can be carried out with the CAS Online System, where more than 600000 substances are searchable through Chemical Abstracts, in France the DARC system is used similarly. In this approach, some biological data will be delivered directly, but more can often be obtained by inserting the CAS number of the substance into the US National Institute of Health s MEDLARS system (available without charge in many countries through local Departments of Health). 

This volume contains six reviews, some of which have a chemical bias while others concentrate on biological topics. The first chapter describes the advantages of computerized literature searching in the medicinal sciences and, in a sample output which covers a few months literature, illustrates how valuable the MEDLARS system can be. Then follows a chapter on the medicinally and toxi-cologically important coumarins. 

MEDLARS Medical Literature Analysis Retrieval System National Library of Medicine Carolyn llllcy MEDLARS Management Section 8600 Rockville Pike Betbesda, MD 20894 (301) 496-6193 Collection of databases containing toxicological research information and literature citations. 

HSDB (Hazardous Substances Data Bank). 2000. MEDLARS Onhne Information Retrieval System, National Library of Medicine, retrieved 9/6/00. 

MEDLINE An online database of MEDLARS, the computerized bibliographic Medical Literature Analysis and Retrieval System of the National Library of Medicine. [NIH]... 

Research articles of interest to biochemists may appear in many types of research journals. Research libraries do not have the funds necessary to subscribe to every journal, nor do scientists have the time to survey every current journal copy for articles of interest. Two publications that help scientists to keep up with published articles are Chemical Titles (published every 2 weeks by the American Chemical Society) and the weekly Current Contents available in hard copy and computer disks (published by the Institute of Science Information). The Life Science edition of Current Contents is the most useful for biochemists. The computer revolution has reached into the chemical and biochemical literature, and most college and university libraries now subscribe to computer bibliographic search services. One such service is STN International, the scientific and technical information network. This on-line system allows direct access to some of the world s largest scientific databases. The STN databases of most value to life scientists include BIOSIS Pre-views/RN (produced by Bio Sciences Information Service covers original research reports, reviews, and U.S. patents in biology and biomedicine), CA (produced by Chemical Abstracts service covers research reports in all areas of chemistry), MEDLINE, and MEDLARS (produced by the U.S. National Library of Medicine and Index Medicus, respectively cover all areas of biomedicine). These networks provide on-line service and their databases can be accessed from personal computers in the office, laboratory, or library. Some... 

MEDLARS. The U.S. National Library of Medicine s (NLM) Medical Literature Analysis and Retrieval System contains over 30 bibliographic databases covering medicine, dentistry, nursing, pharmacology, toxicology, cancer, veterinary medicine, and allied health professions (37). The MEDLARS electronic storage and retrieval system was established at NLM to provide bibliographic access to NLM s biomedical literature collection. 

In addition to the publications dealing with ingredients, there are also publications dealing with nomenclature (e.g., United States Approved Name (USAN) and USP Dictionary of Drug Names), information indexing (e.g., Index Medicus, National Library of Medicine), and information retrieval (e.g., computer-based Medical Literature Analysis and Retrieval System MEDLARS and MEDLINE, National Library of Medicine). 

GenRx, The Complete Reference to generic and Brand Drugs. MEDLARS, Medical literature Analysis and Retrieval System. 

MEDLARS Medical Literature Analysis and Retrieval System... 

In a second generation of MEDLARS, which is planned for implementation this fall, it will be possible, with the aid of the data base established through the Chemical Abstracts registry system, to index biomedical publications with many more specific terms and chemicals than has been possible under MEDLARS I. While it is not projected that this extensive listing of chemical compounds be included in Index Medicus, it will be possible to provide such listings in other MEDLARS products. Thus a current publication of the Library, the Toxicology Bibliography, will list the biomedical literature by any desired chemical classification. 

Harley, A. J. The medical literature analysis and retrieval system — Medlars. In Computer-based information retrieval systems (ed. B. Houghton). London Clive Bingley 1968. 

The National Library of Medicine (NLM) has its own data systems network. Under NLM s MEDLARS program, a number of data bases on toxicological and health effects of chemical substances are now available. One very useful data base is TOXLINE, which stands for Toxicology Information On-Line. Full information on TOXLINE and other data bases within the NLM MEDLARS program can be obtained by contacting MEDLARS Management Section, Specialized Information Services, National Library of Medicine, 8600 Rockville Pike, Bethesda, Maryland 20209 [(301) 496-6193], or (800) 638-8480. 

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