The phrase "a more frequent expression" is correct and usable in written English.
It can be used when discussing the commonality or prevalence of a particular phrase or term in language.
Example: "In recent years, 'climate change' has become a more frequent expression in media and public discourse."
Alternatives: "a more common phrase" or "a more prevalent term".
Moreover, we found a more frequent expression of PRL-3 in lymph node metastases as compared to the primary tumours (91.7 vs 66.7%; P=0.033).
Cross et al. observed a more frequent expression of RANKL in estrogen negative patients with a high histologic grade breast cancer.
However, only a trend for a more frequent expression of P-170 was found in the leukaemic cells of patients who experienced relapses (P = 0.099).
Sotelo et al. found HLA DQ2/DQ8 haplotypes in 11 out of 15 children with CD in Northern Mexico [ 16] and Cerda et al. found a more frequent expression of DQ8 haplotypes in adults with CD [ 17].
As shown for other tumour entities, we have found a significantly more frequent expression of PRL-3 in lymph node metastases as compared to the corresponding primary tumour.
GPC1 and GPC6 were rarely seen in the intralesional stroma of oral cavity HNSCC lesions (13 out of 163 and 16 out of 163 of the cases, respectively), whereas GPC3 was consistently absent from this compartment and GPC4 showed a somewhat more frequent expression in stromal cells (19%; 31 out of 163 of the cases; Table 2; Figure 2).
There was a trend toward more frequent expression in the epithelium of malignant tumours (71.4%) compared to benign (54.3%) although this failed to reach statistical significance (Table 1).
Subsequent immunohistochemical analysis in a series of 153 unselected cases of breast cancer confirmed the more frequent expression of MAGE-A and NY-ESO-1 protein in ER-negative tumors, and similar findings were also observed by analyzing 19 cases of ER, PR and HER2 triple-negative breast cancer.
Interval cancers have been shown to have biological characteristics including a higher proportion of proliferating cells and more frequent expression of p53 [ 21] that suggest more rapid tumor growth.
In contrast, CT7 showed more frequent expression in the ER−HER2+ group (47.5% versus 14.2%, p<0.001), and CT45 were more frequently expressed in the ER-HER2− group (2.5% versus 18.2%, p = 0.009).
Comparison with 5 eAML cases including 2 malignant tumors showed similar morphology and immune reactivity except for more frequent expression of HMB45 and lack of PAX8 positivity.
