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Extraction of Total RNA and RT-PCR
Total RNA was extracted from lung and liver
tissues (20mg) using RNeasy mini protection kit
from QIAGEN according to the supplier¡¤s guideline
.The concentration and purity of the extracted
RNA were checked spectrophotometrically by mea-
suring 260/280 absorption ratios.The primer pair
for ASTIV was designed in our laboratory using
the Gene Fishe rprimer designing and Multialign-ment software.Usingtheforwardprimer(FP)5`-GTGTCCTATGGGTCGTGGTA-3`
/reverseprimer(RP)5`-TTCTGGGCTACAGTGAAGGTA-3 (GenBank acces-
sion no.X52883),the299-bp AST IV cDNA was syn-thesized.The 264-bp STa cDNA was synthesized using the primer pair FP 5`-TCCTCAAAGGATATGTTCCG-
3`/RP 5`-CAGTTCCTTCTCCATGAGAT-3` (GenBank
accession no.M33329).The specificity of all primers was tested using the BLAST from the National Cen-terfo rBiotechnology Information Open Reading Frame
software.cDNA synthesis from total 1 ug of liverand
2 ug of lung RNA was performed in a 50 uL reaction
mixture.Concentrations of the different ingredients
used followed the supplier¡¤s guidelines. Forinterna
control,500-bp cDNA of rat ¦Â-actin was synthesized
from the same amount of RNA from respective sources.
The prime rpair FP5`-GATGTACGTAGCCATCCA-3`/RP5`-GTGCCAACCAGACAGCA-3` for the synthesis of rat ¦Â-actin cDNA was designed in our laboratory
using the software mentioned above.

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