"persistent expression" is a correct and usable phrase in written English.
You can use it to describe a person's facial expression or behavior that is consistent over a long period of time, or to describe an idea, behavior, or sentiment that remains strong despite challenges or difficulties. For example, "Despite the setbacks, she maintained a persistent expression of optimism about her future."
The core problem of pig iPSCs is the persistent expression of transgenic genes (Petkov et al., 2015).
Even in the absence of TLR9, persistent expression could only be achieved with a CpG-free transgene.
We found that skeletal muscle-derived cells in the constructs exhibited sustained electrical coupling through persistent expression and function of gap junction proteins.
Together, these data indicate that in order to achieve high levels of persistent expression in vivo, a CpG-free transgene cassette is required.
However, research is currently underway to investigate the biological consequence of persistent expression of the exon 2-encoded conserved cysteine-rich domain in post-natal skeletal tissues.
One concern in the therapeutic application of the SB system is that persistent expression of transposase could result in transposon instability and genotoxicity.
Infection by high-risk human papillomavirus and persistent expression of viral oncogene E6 are etiologically linked to the development of cervical cancer.
VCAM-1 expression is not constitutive of, but does appear on endothelial cell surface in atheroprone sites even before the onset of visible disease, with persistent expression in more advanced lesions [4].
The publish/subscribe pattern is distinguished from the request/reply one by the asynchronous delivery of messages and the ability for a client to specify an ongoing, persistent expression of interest.
The publish/subscribe MEP is distinguished from the request/reply model by the asynchronous delivery of messages from the server to the client, and the ability for a Subscriber to specify an ongoing, persistent expression of interest.
Hepatic maturation was accompanied by decreased, but persistent expression of Oct4 (2.2±1.2%).
