Early studies of the Bacteroides mobilizable transposon NBU1 established that excision, the first step in NBU1 transfer, requires exposure of the cells to tetracycline. More recently, we found that excision is also associated with growth phase; even after exposure to tetracycline, excision is detectable only after the cells enter late exponential phase. The tetracycline effect is mediated by a ...

Transposons are mobile genetic elements that are capable of self-directed excision and subsequent reintegration within the host genome. Transposase such as piggyBac, Sleeping Beauty and Tol2 catalyze these reactions and have shown potential as tools for the stable integration of transgenes when used in the binary plasmid mode. Recent modifications to the transposase and/or the terminal repeats ...

Abstract We develop a categorical index calculus for elliptic symbol families. The categorified problems we consider are secondary version of the traditional problem expressing class in K-theory terms differential-topological data. They include orientation moduli spaces as well similar skew-adjoint and self-adjoint operators. main result this paper is an excision principle that allows compariso...

background depending on the cause, 40-90% of every deep dermis insult ends up in scar formation. several modalities have been suggested as a treatment but a high rate of recurrence is reported in most of those interventions. high dose radiotherapy has been shown to be effective in reducing the recurrence rate. this study tried to determine the effectiveness of low dose rate radiotherapy followi...

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to enrich our understanding of the attitudinal/motivational basis of foreign language learning at junior high school level, this study investigated the students’ status of l2 motivation, the relationship between motivational factors, and the possibility of predicting their motivated learning behavior in light of dörnyei’s (2005, 2009) theory of l2 motivational self system. to this end, 1462 jun...

objective: microleakage has always been a problem in restorative dentistry. to decrease microleakage, modern bonding systems, different application methods and sandwich technique have been recommended. the purpose of this study was to assess the microleakage in class v cavities restored with open sandwich technique using self-etch and total-etch bonding systems.   methods: in this in vitro stud...