But the 1918 pandemic, the worst by far, is thought to have occurred without a gene swap, when a bird flu somehow mutated enough to jump into humans.
The culprit is a bacterium known as Ehrlichia ewingii, which so far was thought to infect only dogs.
One of the key issues contributing to the lack of efficacy in the trials conducted so far is thought to be the relatively low doses of vector used in many of the initial trials.
Biochemical and regulatory pathways have so far been thought and modelled within one cell type, one organism, one species.
It has so far been thought that glyoxalases protect cells by removing products of glycolysis or lipid oxidation.
As a further challenge to the traditional definition of viruses, giant viruses have several essential protein synthesis genes that have thus far been thought to be exclusive to cellular life [[ 1]].
ORMDL3 has so far been thought to be the most promising candidate at this locus, since it has a role in mediating inflammation, and also has expression in bronchial epithelial cells, where slightly higher ORMDL3 expression was found in individuals with asthma compared to controls [ 26, 27].
In particular, the high trichome-specific expression of peroxidases suggests strong enzymatic oxidation activity in trichomes, potentially allowing for effective oxidative reactions in the final phase of the biosynthesis of artemisinin, which have so far been thought to be non-enzymatic in nature.
TEM1 has so far been thought of as a promising molecular target for sarcoma; however, the present study showed the possibility that TEM1 inhibition might represent a new therapeutic strategy through the targeting of TEM1 expression in the CAFs of gastric carcinoma.
So far, CSCs are thought to demonstrate resistance to chemotherapeutic agents and radiation mainly due to their expressions of multidrug transporter family genes and DNA damage response genes.
