If I had to pick one image to sum up my entire field it would be this; an image showing the connectivity of diseases in humans. This shows that most are diseases are not independent as traditionally thought, instead are highly related to each other, sharing common genetic causes and risk factors. This is what integrative systems biology is all about, taking a holistic view of the human body, integrating multiple levels of biological data to discover new things about disease pathogenesis.
The study is also quite an interesting read:http://www.pnas.org/content/104/21/8685.long
as is its follow up study, which shows that individuals with one disease are likely to develop other diseases connected to it in the human disease network:http://www.ploscompbiol.org/article/info%3Adoi%2F10.1371%2Fjournal.pcbi.1000353