Words similar to episomal
Example sentences for: episomal
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These observations are consistent with earlier studies that a punctate signal is representative of integration and a diffuse signal of episomal HPV, and with the theory that integration is an important factor in lesion progression [ 2 12 ] . The data suggest the optimized method may be useful in screening CIN lesions for integration.
The demonstration of 1-2 copies of integrated HPV DNA detected as punctate signal begs the question as to why single/low-copy episomal HPV is not also detectable as punctate signal.
A possible explanation maybe that that ~8 kilo-base single/low-copy episomal HPV sequences may be subject to relatively more degradation and loss from tissues during routine processing than HPV DNA that is physically integrated into the human chromosome (~50 - 250 mega-base pairs).
If this is the case, then punctate signal detected in carcinomas and high-grade CIN lesions may only represent integration of multiple copies of HPV at sites within the genome, and low-copy episomal (or integrated) DNA may remain sub-threshold on archival FFPE samples.
'Diffuse' signals (indicative of episomal HPV), 'diffuse' and 'punctate', or 'punctate' signals alone were demonstrated amongst pre-invasive lesion samples (Figure 2A,2Band 2C).