Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SMITH CW,The cells of human colostrum. I. In vitro studies of morphology and functions,Pediatr Res,,,1968,2,,103-109,https://cir.nii.ac.jp/crid/1570572701120034304,https://doi.org/10.1203/00006450-196803000-00005