You can do reserach in pretty much anything. Most people do reserach withing their major. So if you are a bio major you would talk to different biology professors at you school and see what type of research they are doing. There are different ways to get information on this, at my school the biology advising office is very helpful. Or you can speak to professors that you have class with. After you decide that you are interested in someone's research, you contact them and talk to them about the possibility of doing undergraduate reserach in their lab.
Clinical Experience includes a lot of things, but usually involves working with people in the health care field. For instance, you can volunteer at a hospital, become an EMT, become a phlebotomist, work in a nursing home even. Those are just some examples, but there are many more!!
Well I hope that helps.