This hand-held biosensor makes breast cancer screening fast, affordable, and accuratePeer-Reviewed Publication AMERICAN INSTITUTE OF PHYSICS THE PRINTED CIRCUIT BOARD USED IN THE SALIVA-BASED BIOSENSOR, WHICH CAN DETECT BREAST CANCER BIOMARKERS FROM EXTREMELY SMALL SALIVA SAMPLES IN ABOUT FIVE SECONDS, COSTS ABOUT $5. THE DESIGN USES WIDELY AVAILABLE COMPONENTS SUCH AS COMMON GLUCOSE TESTING STRIPS...