10. A tracer is a radioactive element whose pathway through which a chemical reaction can be followed. Tracers are commonly used
in the medical field and in the study of plants and animals. Radioactive Iodine-131(I131) can be used to study the function of the _____ gland assisting in detecting disease. a. Adrenal
b. Salivary
c. Pituitary
d. Thyroid
