@Kuren
You send your results to your contact and your message is met with an "I'll send you a message when I get the results" almost instantaneously.
You then get to searching for "culebas curare" on the Matrix. After a few moments, you find that it is a poison that was primarily used by aboriginal tribes in South America. The poison works as a lethal muscle relaxant, stopping the basic bodily functions, which usually ends with respiration paralysis, but doesn't affect the heart.
Satisfied with your findings, you decide to get ready to go meet the Johnson when something catches your eye: it's one of those "independent reporter" node mentioning something about curare in Neo-Tokyo. Curious, you read through the short paragraph. The "reporter", if you could call him that, says that he found a strange correlation between people dying after having run-ins with the Yoshimoto-gumi and deaths from people with curare poisoning. Of course, no evidence is presented to back his hunch.