Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Haruhiko Takada and Shigekuni Yokoyama and Shuhua Yang,Enhancement of endotoxin activity by muramyldipeptide,Journal of Endotoxin Research,0968-0519,SAGE Publications,2002-10-01,8,5,337-342,https://cir.nii.ac.jp/crid/1363670320742884224,https://doi.org/10.1179/096805102125000669