Figure S1 - Identification and Effect Decomposition of Risk Factors for Brucella Contamination of Raw Whole Milk in China

Agarose gel electrophoresis of PCR assay for detection of Brucella DNA. Lane M: molecular weight marker; Lane 1: Polymerase chain reaction (PCR)-positive control (Brucella suis strain 2); Lane 2–5: PCR products amplified from Brucella DNA extracted from part of raw milk samples; Lane 6: PCR-negative control (no DNA). (DOCX)