The phrase "are primarily expressed" is correct and usable in written English.
It can be used when discussing how certain ideas, emotions, or characteristics are mainly conveyed or communicated.
Example: "The artist's feelings are primarily expressed through the use of vibrant colors and dynamic brush strokes."
Alternatives: "are mainly conveyed" or "are chiefly communicated."
The cell-surface associated factors are primarily expressed during exponential growth phase, whereas expression of the secreted factors is induced upon transition to stationary phase.
Of the three prophenoloxidase (PPO) coding-genes in the D. melanogaster genome (Tang 2009), the products of PPO1 and PPO2 are primarily expressed in crystal cells, whereas the expression of PPO3 is restricted to lamellocytes (Irving et al. 2005).
Rhox genes are primarily expressed in reproductive tissues and placenta with additional expression domains in endodermal derived tissues [ 3].
Class II HDAC family members have a more tissue-specific expression pattern, and class IIa members are primarily expressed in heart, smooth muscle, and brain.
The expression profiles of ZNF423 and RAI14, if they are primarily expressed by FAPs derived preadipocytes in cattle LM, also suggest that the FAPs derived preadipocytes may contribute little to the observed expression level of the cell cycle genes.
Nhlh1 and Nhlh2 are primarily expressed in sensory neurons in early embryos with an additional later expression of Nhlh1 in inner ear sensory epithelia [36].
First, although the SNAT isoforms are primarily expressed in the labyrinth trophoblast of the rat placenta, some SNAT expression is also found in other cells, such as marginal giant cells and fetal endothelium (23).
Previously, the expression pattern of seventeen genes was examined, which showed that they are primarily expressed in the ectoderm.
On the other hand, Type-I AtAHLs, which constitute the Clade-A AHLs, are primarily expressed during vascular tissue and root development, which are distinctly different from the expression patterns observed for Type-II and -III AHLs.
TRPV channels have been identified on sensory neurons and on epithelial cells, and TRPM channels are primarily expressed on C-fibres in peripheral nerves.
Core 3-derived O-glycans, which are one of the major types of O-glycans, are primarily expressed in colon.
