The phrase "are two pathways of" is correct and usable in written English.
It can be used when discussing options, choices, or methods available in a particular context.
Example: "In our analysis, we found that there are two pathways of achieving sustainable energy: solar power and wind energy."
Alternatives: "represent two routes of" or "offer two avenues of".
Consequently there are two pathways of interest related to NF-κB activation: Canonical and alternate.
There are two pathways of payment that diverge and are differentiated by managing risks or managing rewards.
There are two pathways of thymidine supply for DNA synthesis, the de novo pathway and the salvage pathway.
As mentioned above, there are two pathways of trehalose biosynthesis in higher plants, that is, the trehalose-6-phosphate synthase/phosphatase (OtsA-OtsB) and the trehalase pathway, the former serves as trehalose biosynthesis, while the latter degrades it (Paul et al., 2008; Fernandez et al., 2010).
It is logical to believe that there are two pathways of endometrial carcinogenesis: carcinomas occurring from hyperplasia (40%) and carcinomas occurring from normal endometrium (60%).
There are two pathways of anchoring in budding yeast, one of which is enhanced by formation of silent chromatin (Sir4-Esc1, Figure 4A), whereas the other is efficient in its absence (yKu Mps3).
There are three pathways of L-threonine catabolism.
There are three pathways of complement activation, which converge to form the terminal complement complex (TCC) or SC5b-9 complex.
We consider that there would be two pathways of molecular mechanism underlying this phenomenon.
The hypothesis that there may be two pathways of endometrial carcinogenesis proposed by many authors [ 1, 2] was confirmed by our present study of "small endometrial carcinomas".
There are three pathways for utilization of hexuronic acids, namely via isomerization, oxidation, and reduction [35].
