How many interactions have direct and indirect experimental evidence?
From the 237 direct (physical) signaling interactions listed in the current version of SignaLink for C. elegans there are 96 interactions with direct experimental evidence and 151 with indirect experimental evidence. In D. melanogaster the total number of interactions is 233. Of these there is direct experimental evidence for 223 and indirect experimental evidence for 22. In human there are 991 interactions. Of these there is direct experimental evidence for 893 and indirect experimental evidence for 120.
