The phrase "are classically considered the" is correct and usable in written English.
It can be used when discussing concepts, categories, or classifications that have been traditionally recognized or accepted over time.
Example: "These elements are classically considered the building blocks of matter in chemistry."
Alternatives: "are traditionally regarded as the" or "are commonly viewed as the".
Computed tomography (CT), magnetic resonance imaging (MRI) and angiography are classically considered the diagnostic modalities of choice for preoperative evaluation and surgical planning.
Changes in motility elicited by cytoskeletal re-organization, and enhanced secretion of matrix-remodeling enzymes are classically considered the main driving forces in the contribution of reversible TGFβ-driven EMT to invasion and metastasis [ 37].
Interestingly, we found AT8ir threads and neurons in nearly all of the neocortical regions examined, including the primary motor cortex and striate cortex, which are classically considered the last to be affected by tauopathy in PART and Alzheimer disease (AD).
Asthma is classically considered the archetypal TH2 disease, with increased circulating IgE levels and eosinophilic inflammation being caused by increased levels of TH2-type cytokines.
Also, dragline silk is classically considered the toughest and strongest of the diverse toolkit of different silks spun by spiders, but this is not necessarily the case.
Mitochondria have emerged as the most relevant source of reactive oxygen species, the major culprit being classically considered the respiratory chain at the inner mitochondrial membrane.
See related research by Pérez-Casal et al., http://ccforum.com/content/15/4/R195 Sepsis has been classically considered the archetypal clinical condition with molecular links between inflammation and coagulation.
The extent of the similarities was evident in the global microarray expression profiles of FACS-purified L- and K-cells which showed, surprisingly, that upper SI L-cells were more similar to their neighboring K-cells than to L-cells from the colon, although the latter are classically considered as the same cell type.
In most cases the sub- or neofunctionalization events are classically considered to have occurred relatively soon after the duplication event.
Consequently, despite the fact that BRCA1 alleles are classically considered neutral due to their late age of onset, there is actually strong selection against them.
In the Goldberg et al. (2013) study, the overexpressing ATF3 cells were also APC-positive, which are classically considered mature oligodendrocytes.
