A substance produced by the body in response to a specific antigen is a/an:

Patients who are non–weight bearing on their right lower extremity and ambulate with axillary crutches advance what FIRST to descend stairs?

a. Axillary crutches b. Right lower extremity c. Left lower extremity

Ophthalmoscopic procedures are billed separately only if they are not part of a general ophthalmologic service.?

Indicate whether the statement is true or false