lactoferrin
... that the milk protein lactoferrin provides antibacterial activity to human infants?
... that the milk <a href="./Protein" id="mwEVc" rel="mw:WikiLink" title="Protein">protein</a> <b id="mwEVg"><a href="./Lactoferrin" id="mwEVk" rel="mw:WikiLink" title="Lactoferrin">lactoferrin</a></b> provides <a href="./Antiseptic" id="mwEVo" rel="mw:WikiLink" title="Antiseptic">antibacterial</a> activity to human infants?