2.3. Sample collection and preparation
Prior to morning feeding on day 21, a 5-mL blood sample was collected
from the anterior vena cava of each pig. Plasma was obtained
after centrifugation at 3000 ×g for 15 min at 4 °C, and then stored at
−80 °C for D-lactate and DAO detection.
After blood sampling, the piglets were anesthetized by injection of
sodium pentobarbital solution (50 mg/kg of BW) andwere killed by exsanguination.
The small intestinewas removed and 4 cm of jejunumtissue
from the midpoint of the jejunum was collected, gently rinsed with
0.1 M phosphate buffered saline (PBS) at pH 7.2, and then fixed in 10%
formaldehyde-phosphate buffer for subsequent histological and immunohistochemical
analysis. About 3 g of jejunal mucosa was snap-frozen
in liquid nitrogen, and stored at −80 °C until the tissue total RNA
isolation.
2.3. Sample collection and preparationPrior to morning feeding on day 21, a 5-mL blood sample was collectedfrom the anterior vena cava of each pig. Plasma was obtainedafter centrifugation at 3000 ×g for 15 min at 4 °C, and then stored at−80 °C for D-lactate and DAO detection.After blood sampling, the piglets were anesthetized by injection ofsodium pentobarbital solution (50 mg/kg of BW) andwere killed by exsanguination.The small intestinewas removed and 4 cm of jejunumtissuefrom the midpoint of the jejunum was collected, gently rinsed with0.1 M phosphate buffered saline (PBS) at pH 7.2, and then fixed in 10%formaldehyde-phosphate buffer for subsequent histological and immunohistochemicalanalysis. About 3 g of jejunal mucosa was snap-frozenin liquid nitrogen, and stored at −80 °C until the tissue total RNAisolation.
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