A carrier for making antigens. Because of its large size and distant relation to humans and many test animals, KLH causes a large antigenic response. When paired with a hapten, the hapten also becomes immunogenic
Keyhole surgery is a surgical technique in which the surgeon inserts the instruments through small cuts in the patient's body, using as a guide an image provided by equipment inserted into the patient's body. medical operations done through a very small hole in the body