The Rationale Behind the Name - Morgan Stanley

So Morgan Stanley have surprised me with a first round interview 5 days before the date and so I am currently in preperation mode as I know next to nothing about the company. As far as my research tells me , I am only able to find information from a Culture point of view, that they are able to sustain relationships with the biggest institutions whilst maintaining a quasi-boutique feel amongst workers - which most certainly appeals to me. However I really can't seem to find any information on what Morgan Stanley specialises in, i.e. which financial products and which sectors it is strong in. So help would be much appreciated, I am going for a Sales and Trading internship in London so London specific as well as general awnsers would be brilliant.

Cheers.