Intriguingly, not all tumors belonging to a subcluster must necessarily express the master discriminator gene(s) nor is expression of these genes sufficient for assigning a single case to a specific subcluster.
PiL is expression of freedom, and you can't go backwards once you've done that.
The most prevalent resistance mechanism to β-lactam antibiotics is expression of β-lactamase enzymes.
A classic example of foreign gene introduction in plants is expression of Bacillus thuringiensis (Bt) endotoxin genes in plants to protect them against some insects.
The most important is methodology and difficulties of IJVVI assessment: it was assumed that the duration of the jet is expression of severity of IJVVI.
There is expression of the synthetic RA enzymes, and presumably signaling, in the dorsal and ventral retina [80], [81], [28].
A critical component of any model involving CD8+ T cells is expression of cognate MHC class I molecules on the target structure.
Additionally, there is expression of a RA degrading enzyme (Cyp26) in the central retina that is presumably devoid of RA signaling (Fig. 13B) [28], [28].
In this model, a feature of the bioenergetically stressed phenotype of glioma cells, as defined by the microenvironment, is expression of CD133.
The major molecular risk factor for late-onset AD is expression of the ε-4 allele of apolipoprotein E (apoE), the major cholesterol transporter in the brain.
In experiments of Müller et al. [5], the observable quantity is expression of a reporter gene (e.g., β-galactosidase) as a function of variables such as operator spacing or operator affinity for LacR.
