The sequence variation project at EBI aims to create a unified resource for
browsing and searching sequence differences. Technical advances in reading
in neu data types and in validating and cross referencing entries are repo
rted. Tt is suggested that the hardest problems in unifying mutation databa
ses are related to intellectual property rights. The concept of copylefting
is introduced as a potential solution to these. Hum Mutat 15:52-56, 2000,
(C) 2000 Wiley-Liss, Inc.