The phrase "absent expression" is correct and usable in written English.
It can be used to describe a lack of visible emotion or reaction in a person, often in contexts related to psychology or art.
Example: "Her absent expression during the meeting suggested that she was lost in thought and not fully engaged in the discussion."
Alternatives: "blank expression" or "vacant expression".
In contrast, other K-Channels such as KCTD12 were expressed within the arcopallium, but showed low or even absent expression in RA.
The genes in G2 were highly expressed in hOFs but may be kept at low or absent expression levels in hDFs.
Complete loss of Chd7 results in aplasia of the semicircular canals and sensory vestibular organs, with reduced or absent expression of Otx1, Hmx3, Jagged1, Lmo4, Msx1 and Sox2.
Rattanasopha S, Tongkobpetch S, Srichomthong C, Kitidumrongsook P, Suphapeetiporn K, Shotelersuk V. Absent expression of the osteoblast-specific maternally imprinted genes, DLX5 and DLX6, causes split hand/split foot malformation type I. J Med Genet.
Purity of isolated monocytes was characterized by high expression of CD14 (>96% positive cells) and absent expression of CD1a and DC-SIGN.
No significant change in the weak or absent expression of IL-7Rα and IL-15Rα expression on FoxP3+ cells was observed.
Immature MoDC were characterized by absent expression of CD14 and high expression of CD1a, HLA-DR, DC-SIGN and phagocytic activity.
These cancers are characterised by low to absent expression of genes involved in tight junctions and cell-cell adhesions, including claudins, occludins and E-cadherin [14], [15].
These data are consistent with the low or absent expression of 4-1BB on CD4+ T and CD8+ T cells of P-mice.
This implies that although all ATC cell lines are dedifferentiated (absent expression of thyroid-specific genes such as Tg, TPO and NIS and positivity for onfFN), in ARO/CD133poscells a marker of thyroid organogenesis is still maintained.
The author of that study suggested that low or absent expression of β-galactosidase may be an occasional phenomenon related to the poor expression of prokaryotic genes in eukaryotes.
