Comments from Jnims 

Great job with your project! Let's start with the things I particularly enjoyed/appreciated:
Good stuff
Lots of informative content
Good organization
Clear prose
Surprisingly easy to read (in a good way!)
I have very few suggestions to make, because the article is excellent, overall.

...But here are some suggestions for improvement:
Suggested improvments
Circulating microvesicle formation and contents
The image is extremely helpful, but the caption could use some cleanup, especially the placement of the numbers.
Role on target cells and Relevance in disease
Both of these sections contain good information, but the small subsections could use more, especially those that contain only one or two sentences. Alternately, you could eliminate the subsections and lump everything together in a few larger paragraphs.

Best of luck!