The data used for beta 6.1 is same as from beta 6.0 (http://
irefindex.uio.no/wiki/README_iRefIndex_MITAB_6.0). There is no change
in number of interactions or interactors. However, there was an error
in the interaction centric files of beta6.0. All interactions provided
MPPI database as evidence, even though the interaction may not appear
in MPPI database. We thank Brian Turner for pointing this out and we
apologies for any inconvenience coursed.