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Example sentences for: unknown

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Stimulation of P2X purinergic receptors by ATP causes similar changes in cytosolic Ca 2+and vital dye uptake [ 10, 11, 12, 13, 14, 15, 16, 17] suggesting that MTX activates a cell death cascade that is physiologically relevant, although the exact role of either the P2X- or MTX-induced cascade in normal cellular biology remains unknown.
Richard Longabaugh commented on how much remains unknown about what motivates patients to change their use of alcohol.
Unanimous praise for this selection of Heaney's poems, which "eloquently confirms his status as the most skilful and profound poet writing in English today" (Edward Mendelson, the New York Times Book Review ). The book includes excerpts from his translation of Sophocles and his Nobel lecture, but more important, it features a wide selection of his poems, charting his progress from unknown to Nobel laureate.
The harmonic balance method can be used [ 17 ] . The basic idea is to represent the limit cycle by a Fourier series with unknown coefficients ( a
In addition, compartmentalization of homooligomeric SCF Pop1pand SCF Pop2pcomplexes may direct the ubiquitylation of unknown nuclear and cytoplasmic substrates.