Old engraved illustration of diagram of cross section of the first part of the duodenum (the first section of the small intestine, the principal site for iron absorption)

Old engraved illustration of diagram of cross section of the first part of the duodenum (the first section of the small intestine, the principal site for iron absorption)图片素材作品是由视觉中国旗下网站（VCG.COM）的图片品牌合作方：Moment提供，作品作者是:mikroman6/视觉中国；图片ID:VCG41N2227364037；最大规格:6293 x 7943 px (300ppi) | TIFF 143.01 MB；存储大小:10.12 MB - JPG;授权方式是:；当前图片素材提供下载与正版授权服务，助力您的品牌提升。