Fleming B B, Barrows C H
Exp Gerontol. 1982;17(2):121-6. doi: 10.1016/0531-5565(82)90045-6.
The intestinal absorption of doses of vitamin B12 and of niacin was examined in 6, 12, and 24 months old female Wistar rats. Rats were dosed via stomach tube with radioactive forms of the vitamins and were killed 16 hours later. Percent of the dose remaining in the stomach and gastrointestinal tract and in the collected feces was determined. Absorption of the two vitamins was not influenced by the age of the animals.
在6个月、12个月和24个月大的雌性Wistar大鼠中检测了维生素B12和烟酸剂量的肠道吸收情况。通过胃管给大鼠投喂放射性形式的维生素，16小时后将其处死。测定了残留在胃、胃肠道和收集粪便中的剂量百分比。这两种维生素的吸收不受动物年龄的影响。
