Sentence examples for occurs was not from inspiring English sources

However, we and Zhu et al have shown that knockdown of optineurin increases basal NF-κB activity in various cells though the mechanism by which this occurs was not known.

Although previous studies have suggested that Aβ is involved in the inhibition of NO-induced processes such as hippocampal long term potentiation [21], vascular tone [23], and CREB phosphorylation (18), the molecular mechanism through which inhibition of NO signaling occurs was not defined.

While some participants pointed out that domestic violence can cause obstetric fistula, the exact mechanism by which fistula occurs was not reported.

Mice deficient for RAGE expression are resistant to DMBA/TPA-induced skin carcinogenesis demonstrating increased apoptosis in the tumor microenvironment and diminished inflammatory responses (11); however, the mechanism by which this occurs was not previously delineated.

However, the critical strain for which sliding occurs was not estimated directly as the authors assumed shear lag behavior to extract the above value from the center of the flake.

In our study, only the acute peripheral neurotoxicity was observed because a cumulative dose of 700 mg m−2, after which the chronic sensory neurotoxicity normally occurs, was not reached.

The mechanism by which such damage occurs wasn't clear in the 2003 study, however.

Why that occurs is not known.

Why group polarization occurs is not entirely clear.

Exactly how that transformation magically occurs is not spelled out.

Why that occurs is not known, she said, adding, "We're working on that right now".