Their appearance in adult mice was a surprise.
But breeding mutant mice was a laborious, one-mouse-at-a-time process.
What Dr Yamanaka discovered in his work on mice was a group of transcription factors that switched on the pattern of gene expression which says, "I am an embryonic stem cell".Surprisingly, there were only four of them, known as Oct3/4, Sox2, c-Myc and Klf4.
To investigate whether impaired tumor growth in CD146EC-KO mice was a consequence of impaired host angiogenesis, we compared tumor vessel density in tumor sections from CD146EC-KO mice and WT mice.
The only notable effect of albumin on the hepatic cytokine profile that we observed in septic mice was a significant decrease in IL-1β in response to Seplyte H + 5% albumin (Fig. 4c), which differed from the trends observed for crystalloid fluids alone (Fig. 2c).
Importantly, the most striking phenotype in female Rpn13−/− mice was a developmental defect in the ovaries.
Previously, it has been suggested that the lethality observed in Atf20/0 mice was a result of defective placenta development [12].
Therefore, we can not rule out that the initially observed difference in weight between wild type and hSAA mice was a spurious finding.
It is possible, therefore, that the increasing inactivity seen in the R6/2 mice was a result of decreased strength and energy.
The only premature defect we were able to identify in the colon of Hnf4α null mice was a decline in ion transport.
We reasoned that if the lack of torpor in Dbh −/− mice was a result of hyperleptinemia, the DBL MUT mice would enter torpor bouts upon fasting.
