Novel patterns of efficient components recognition and quality control for Chinese materia medica based on constituent knock-out/knock-in Application of T-DNA insertion mutation in the plant nutrition research: A review Methodology on specific knock out of glycyrrhizic acid by immunoaffinity chromatography column Construction and Activity Assay of Transcription Activator-like Effector Nuclease(TALEN)Plasmids for ALK4 Gene Knock-out Analysis on ideas and methods to identify target components group of Chinese materia medica preparation Study on material base of Carthamus tinctorius with antioxidant effect based on selective knock-out Research progress on effective compounds group of Chinese materia medica