I work at a nuclear pharmacy and one of our veterinary clients is wanting to do infection studies on horses. How large of a blood sample would we need and what is a typical dose for horses? Would it be based on weight, or a standard dose like in humans? I have been scouring the internet for studies, but everything I am coming up with requires payment to see more than the abstract, and unless we know the study is going to be useful we don't want to pay to read it.