Post Graduate Studies

To be honest, I haven't thinking too much about this, my actual and only goal it's to finish my career (actually I just wanna past my subjects), that includes master and phd degree, but I'm not sure about I want to do in the future, because the problem eradicates in the specialization, I like three areas: molecular genetic, immunology and toxicology, and I haven't decided yet between those areas (besides, I'm too young to decide immediately. I have to travel a long way), but the only thing that I'm 100% sure is to do a post grade out of Chile, I have preferences for Germany and Canada, those countries are ideal to me in terms of education and quality life.
Another thing that I'm pretty insecure is the area of work I want unwrap. For my tastes, I like two: Bio-clinic and PDI.  

                                                                                                                                                      

Working in clinic seems interesting, I'd like to investigate about many diseases and help people to treat them. I'd like to find cancer's cure, that would make history, and discover how the human body works from a biochemical view. All of them are goals that probably I won't do, but I hope that somebody else can make it.

The only bad thing is that I'm not sure about the area of science I have to specialist, I was thinking in immunology, but genetic can be accepted too.

This is probably the area of work I like the most, I always have been into the world of PDI, the mistery, the risk, the boldness, all that qualities seems so attractive to me. I wanna be forensic because I've always wanted to investigate a dead body, how died, how long he has been dead and the reasons of why he/she slayed or he/she suicide. It's a bit morbid, but I like it.
I would like to be toxicologist too, I always liked drugs, how are made and how works into the human body. It's very dangerous too for the drug dealers, but that characteristic makes it so cool.