Using white rats trained to artificial feeding once daily, observations were made on the hepatic cells, which displayed marked increase in vacuoles 2 to 9 hours after feeding. Vacuoles developed after 2 to 4 hours consisted chiefly of absorbed fat, but those after 5 to 9 hours mainly of glycogen.
Fundamentally the changes of the plastosomes in the hepatic cells after artificial feeding did not differ from those after normal feeding, however, the changes took place much earlier and stronger.
The lipoid contents of the cells varied with the time. They disappeared after 3 hours and again became visible after 9 hours, which seemed to come from newly absorbed fat.