Sample research interest letter for graduate entry level regd/-

Dear All

Greeting, I am new to this site and i hope it will help me out. I am applying for graduate Studies(MSc by Thesis)in Toxicology.and i need to submit aletter of reserach interest. So, i need sample or example of Research interest letter, inorder to have clear view to prepare or write.

Any help will be highly appreciated.

Kind Regards

MKH.