Deciding on a Topic

Wow, it's hard to decide on a topic. I've decided to research treatment of Type I Diabetes using stem cells, but this generates additional, more detailed, questions about the research paper. Do I focus on embryonic stem cell research, or non-embryonic stem cells, or both? I was afraid that if I pick just one of this topics I may not be able to find enough research to fulfill the 3 to 5 page requirement. After looking through some sources, however, it seems that there is a wealth of information about treating this disease with stem cells taken either from other sources (donors, umbilical cord) or from the patient him/herself (via immune stem cells, blood stem cells) and its positive effect on the treatment of diabetes. However, there is also a good deal of information involving embryonic stem cells and I'm reluctant to abandon this branch of researching until I look at more sources. I'll decide by next post and finalize my questions, hopefully.