Five animals per group were sacrificed at the following time points : 14:00 , 17:00 , 20:00 , 23:00 ( day 7 ) , 02:00 , 05:00 , 08:00 and 11:00 ( day 8 ) .
Five animals per group were sacrificed at the following time points : 14:00 , 17:00 , 20:00 , 23:00 ( day 7 ) , 02:00 , 05:00 , 08:00 and 11:00 ( day 8 ) .
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