Common radioactive materials used in brachytherapy include radium-226, cobalt-60, cesium-137, and _______

What is the average skin puncture depth appropriate for an adult?

A) 0.5–1.0 mm B) 2–3 mm C) 3–5 mm D) 5.5 mm

To say that Baby Fae's operation was research and not therapy implies that:

A. there was little chance of success. B. there was little chance of adding to knowledge. C. there was a good chance of success. D. there was a small chance of success. E. there was little chance of adding to knowledge or of any success.