Assertion: reproductive system's organ | /r/HasProperty | a network of sacs
Facets:
value: within each mammary gland
type: LOCATION
Source sentences:
text: Mammary Gland Mammary gland: The compound accessory reproductive organs of female mammals that occur in pairs on the chest or ventral surface and contain milk-producing lobes with ducts that empty into an external nipple, Within each mammary gland is a network of sacs that produce milk during lactation and send it to the nipple via a system of ducts.