[Development of the contractile activity of the thoracic duct in dogs in postnatal ontogenesis]. / Razvitie sokratitel'noi aktivnosti grudnogo limfaticheskogo protoka u sobak v postnatal'nom ontogeneze.

It has been demonstrated that the thoracic lymph duct in newborn puppies exhibits only tonic (spontaneous) contractile activity. Rhythmic activity in the duct appears at the age of 2 1/2-3 months.