The Traditional Chinese Medicine Hospital of Beichuan Qiang Autonomous County 1 article published in JoVE Medicine Effects of Desmodium caudatum on Gastrointestinal Hormones and Intestinal Flora in Rats with Gastritis Lan Bu*1, Chengjia Tan*1, Bainian Zhang1, Jian Hu2, Xuemei Zhang2, Xue Han2, Hui Tian1, Xiaoyan Ma2 1Key Laboratory for Quality Control and Evaluation of Traditional Chinese Medicine of Mianyang City, Mianyang Normal University, 2The Traditional Chinese Medicine Hospital of Beichuan Qiang Autonomous County The present protocol describes the method for analyzing intestinal flora using Illumina-based 16S rRNA gene sequencing and provides a framework for evaluating the effectiveness of herbal decoctions.