Internet network offers a valid help to people looking for information and revision instruments on genetic diseases thanks to a very quick consultation.

In fact at the first place for an Italian obctor there's the giude to diagnostic service and to the associations, supervised by AIRH in co-operation with the health department and with   the scientific associations. This guide is a part of a thematic network dedicated to GENET genetics reachable through Word Wide Web.

The guide offers an up-to-date list of various services: genetic consultation, cytogenetic laboratory, molecolar genetics and biochemistry with the name of the done examinations, of the person in charge, the adresses, the telephone numbers and the fax numbers. The information can be loocked up in the guide for pathology and for regions. To make it easer to consult it there's a word research motor allowing to have the required information as soon as possible.

The most valutable and authoritative source in English language is the OMIM database [Online Mendelian Inheritance in Man]. It can be consulted on American National Library of medicine computers.

Oak Ridqe National Laboratory site has several research instruments and offers a wide documentation on ethical, social and legal aspects of gene selection.

Another interesting source is the Kansas University Genetics Education Center. It publishes two sections: one for everybody and the other one for people professionally concerned with genetics.

The most recent site is SMAnet. It informs about research, prevention, treatment and support of patients afficted with muscular spinal atrophy.

As for as scientific bibliography is concerned, it's worth signalizing three addresses good for making free research on MEDLINE National Library of Medicine data bank which gathers all the articles published in medical qualified literature. These three addresses are: Medscape, HealthGate and Entrez sites. While with the first two sites you hare the possibility to enter the whole data bank, the last one is restricted to subsections dedicated to molecular biology.