||Human Homo sapiens
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||Primary source  abstract: "The mastectomy specimen weight was obtained for each breast." Primary source  abstract: "During the operation, the tissue removed during total mastectomy was weighed and the specimen volume was calculated from the weight."
||Supplementary Materials p.3 5th paragraph: "Breast tissue estimates. Each side of the human female breast has a mean weight of ~340 grams (primary sources), of which 3.6% - 37.6% (~20%, mean) is fat (BNID 115535)."