STRING Protein Protein Interaction Database

I am very keen on having a research over PPI networks and their visualization. Recently, I look at STRING database and I see that they have some nice visulizations using just browser api. Indeed you can also query your protein(s).

In order to have querry for the interaction visulization you just change browser adress bar text. For example,

http://string-db.org/api/image/network?identifier=4932.YML115C&
required_score=950&network_depth=2&limit=10&network_flavor=evidence

returns you


If you change the "network_depth=2" to "network_depth=3", then,

Simply you can see interaction neighborhood of any protein using correct naming and id.